Monday, August 8, 2011

I currently have the “most read” article in the Journal of Web Librarianship… or do I?

I was tracking down and confirming a link to one of my articles* to send a colleague when I noticed a new feature on the Taylor & Francis web site; a sidebar that shows the most read and most cited articles in a journal (see the Journal of Web Librarianship most read articles page for an example).

I couldn’t find any information on how T&F are calculating this metric. I’m guessing it’s based solely on access to one of the full text formats, and doesn’t include the landing page/abstract/first page preview. I wonder if they filter out the major web crawlers. Do they count really brief views of the full-text, of, let’s say, under a minute? I’d like to know, since such quick browses are more likely a dismissal of the content than an actual “read” of it.

As you can see, I’m trying not to be too excited, because this feature could still be getting the kinks worked out of it and I could suddenly drop to the bottom of the pile. The numbers may be fairly accurate, and I could be the author of the most read** article in JWL, only to find out that means a few dozen people accessed it, and I only nudged out the articles ranked three through ten by a few readers. It’s possible that in aggregate the top ten articles only had a few hundred accesses among them, but I certainly hope that’s not the case. I’ll be up for my tenure review soon enough and I’m hoping that some of these accesses will get upgraded to citations by then.


* “Why Aren't E-Books Gaining More Ground in Academic Libraries? E-Book Use and Perceptions: A Review of Published Literature and Research.” Journal of Web Librarianship, Volume 4, Issue 4, 2010.
** Or accessed, at least, since we all know how little people read of the articles/chapters they access, both online and in print.
*** See, I linked to the landing page, not the full-text. I don’t want my own blog post to result in my hit count getting artificially augmented. Besides, I’ve got a server side app running now to hit it a few thousand times a day already. :)

Monday, November 1, 2010

Did you miss the Center for Multimedia Excellence Launch?

The Center for Multimedia Excellence had a kickoff meeting last week. I know several people around the library who wanted to attend, but couldn't fit it into their schedules. Luckily for all of us, they've recorded and posted the University of Illinois Center for Multimedia Excellence Launch.

Thursday, February 4, 2010

Netbooks with e-paper screens

A few months ago, I was wondering when will the print book disappear?
One reason I didn't see that happening in the short term was that there was no ubiquitous device that served as a really good e-reader. Sure, there are e-books out there that are great for reading books, but that's all they can do. I bemoaned the lack of a ubiquitous mobile device that could serve as both an excellent e-reader (for static content like books, articles, etc.) and still be a fully functional computer. I have always loved e-paper- for reading static texts it beats any other electronic display I've seen. But e-paper is miserable at doing almost anything else you'd use an electronic display for- watching a movie, playing a game, or doing basically anything that uses moving elements. That's for two reasons; most e-paper displays are only gray scale (the rare, more expensive color ones aren't going to wow you either yet. It's more "Oh, look, color, finally!" than "Oh wow, that's beautiful. It's every bit as brilliant as my HDTV!"), and all e-paper has a limitation when it comes to the technology's refresh rate—how fast the display can update the image on the screen. For most people, it's too slow to even consider using it to type out even a short instant message. Think of that terrible frustration you feel when your computer gets bogged and the words are constantly about a half-sentence or more behind. Now imagine if that was the best your computer could ever do. And that limitation has, thus far, relegated e-paper to e-books, instead of netbooks, laptops, and other multi-purpose mobile devices. Well, I just saw two promising new products that solve exactly this problem—the enTourage eDGe e-book and a new screen LCD technology from 3qi.

The enTourage eDGe (enough with the case toggling guys—curse you iApple!) takes the brute force approach I suggested--just slap both an e-paper screen and an LCD display onto one netbook. Well, not quite a netbook… maybe next year enTourage? At its heart the Edge (I'm done toggling cases :P ) is more a beefed up cell phone than a pared down laptop/netbook. Quick rundown on some key specs: CPU: 1.2GHz Marvell ARMADA™ PXA168, 4 GB internal memory, LCD Display: 1024 x 600, E-paper Display: 1200 x 825 e-Ink, Operating System: Linux with Google Android. And all for less than $500 (which is about what I had expected—I predicted $450). I was on the cusp of overlooking the pokey processor and lack of an SSD to snap one of these up, but then I read about 3qi's new twist on some old school technology. If the interbuzz can be believed, these screens will soon be popping up on e-books, netbooks, and even full blown laptops soon.

3qi's new screen isn't actually an e-paper technology. It's a low
cost LCD that takes advantage of both transmissive (normal screen, like your laptop or HDTV) and reflective (like e-paper) light. This allows for both high-resolution, reflected grayscale images (at about 200 dpi) like e-paper, when in low power (.5 watts) backlight off mode, or full color, full motion content (just like your laptop) high power (2.5 watts peak) mode. The screen uses less power than traditional LCD (3qi expects it to consume about ½ to ¼ of the power of traditional LCDs under typical use), but it's not going to beat any actual e-paper. E-paper only needs to draw power when it is actually refreshing (redrawing) the screen. So once you pull up a page and start reading, your screen isn't drawing any power until you turn the page again. 3qi's screen will always being drawing some power, even when in backlight-off grayscale mode.

Me, I'm okay with sipping just a bit more power. After all, that means I only will be buying one device in the near future- a laptop with a 3qi screen (or similar tech from someone else :), rather than both a laptop and an e-book. I'm sure my overflowing book bag will appreciate that. If the 3qi screen is as impressive in hand as it looks on paper, then I'm sold.

Monday, December 14, 2009

Two One Day Courses, Jan 19 & 20: Designing Universally Accessible Web Resources & Designing Accessible Web Forms

Jon Gunderson's (Illinois Center for Information Technology and Web Accessibility – iCITA) courses are always fun, engaging, and packed with good information. If you have the time (and the cash :) take a day to attend one of these workshops. If you are fairly new to accessibility (as it relates to web design), definitely attend the Designing Universally Accessible Web Resources course (Jan 19). If you feel pretty grounded in the basics of web accessibility, then you can skip to the Designing Accessible Web Forms session (Jan 20). Form design, in general, can be challenging. Making a well formatted, good looking and accessible web form is even more challenging, especially if you are trying to apply accessibility features to an existing form after the fact. Take this course and you'll never find yourself in that situation again. After one session with Jon, I guarantee you'll find yourself working the best practices of accessible design in from the ground up from now on, and loving the results. :)

Wednesday, November 11, 2009

Today's stumbled upon bit of tech goodness – Outlook 2007 and the hidden message headers

I have an on again off again relationship with MS Outlook. I used it for a while (roughly 2002-2004) only to ditch it after it suffered one too many unrecoverable data file corruption problems (admittedly at least partially due to my attempt to use Outlook+Offline Folders to have a single data file accessed from either my desktop or laptop, kept in sync). I switched to Eudora for a while, until they had a major version upgrade that totally broke the ability to use Eudora with Offline Folders. So I decided to try Outlook (2007) again when I started my position here at UIUC a few years ago. One minor annoyance I ran across was that I just couldn't find an easy way to get to the full email message headers (with all the relay stops a message takes to get to my machine, etc). Well, I stumbled across it today (I hadn't been frustrated enough to actually go hunting for the headers). Here's what I found (just in time for it to be changed in Office 14... woot…)

One way to get to email message headers in Outlook 2007 it is to right-click the message (not in the preview pane, in the list of emails) and select Message Options. Yes, message options: not details, more info, or something sensible, but "Message Options." There, you'll find the "Internet Headers" section, which contains all that occasionally useful information (for checking to see if something is SPAM, for instance). Here's a sample of what you'll find there (basically the path to your machine, from the sender, plus any extra header info any servers/services add along the way):

Return-Path: <m…@illinois.edu>

Received: from relay02.cites.uiuc.edu (relay02.cites.uiuc.edu [128.174.196.4])

by expms6.cites.uiuc.edu (MOS 3.10.3-GA)

with ESMTP id BXU48109;

Thu, 29 Oct 2009 08:48:00 -0500 (CDT)

Received: from pps.reinject (csc05.cites.uiuc.edu [128.174.4.219])

by relay02.cites.uiuc.edu (8.14.2/8.14.2) with ESMTP id n9TDm09e017714;

Thu, 29 Oct 2009 08:48:00 -0500 (CDT)

Received: from csc05.cites.uiuc.edu (localhost [127.0.0.1])

by pps.reinject (8.14.1/8.14.1) with SMTP id n9TDgVqO005351;

Thu, 29 Oct 2009 08:47:59 -0500

Received: from expredir4.cites.uiuc.edu (expredir4.cites.uiuc.edu [128.174.5.187])

by relay09.cites.uiuc.edu with ESMTP id n9TDlwtY021763;

Thu, 29 Oct 2009 08:47:59 -0500

Received: from [130.126.35.138] (libstfadm08.library.uiuc.edu [130.126.35.138])

by expredir4.cites.uiuc.edu (8.14.2/8.14.2) with ESMTP id n9TDluiW021375;

Thu, 29 Oct 2009 08:47:56 -0500 (CDT)

Message-ID: <4AE99D0C.90708@illinois.edu>

Date: Thu, 29 Oct 2009 08:47:56 -0500

From: K…y <m…@illinois.edu>

Reply-To: m…@illinois.edu

User-Agent: Thunderbird 2.0.0.23 (Windows/20090812)

MIME-Version: 1.0

To: E…s <e…2@illinois.edu>,…

j…@illinois.edu

CC: R…r <r…r@uiuc.edu>

Subject: ULSAC

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Friday, November 6, 2009

Some Kindle (and related) figures and quotes

I've been working on tracking down data regarding print book sales, e-book sales, e-reader sales, and related figures and quotes for an article I am working on. I thought I would go ahead and share the highlights of this information, in the hopes that someone else won't need to spend several days tracking down, reading, analyzing, and collocating this information again. :)

Wholesale E-book sales in US, 2008/2009


  • 2002: 5,794,180
  • 2003: 7,343,885
  • 2004: 9,619,503
  • 2005: 10,828,970
  • 2006: 20,000,000
  • 2007: 31,800,000
  • 2008: 53,500,000
  • 2009 (Jan-August): 94,000,000

The IDPF notes "The data… represent only trade eBook sales via wholesale channels. Retail numbers may be as much as double the above figures due to industry wholesale discount… The data… represent only data submitted from approx. 12 to 15 trade publishers… The data does not include library, educational or professional electronic sales… The numbers reflect the wholesale revenues of publishers."13

It's a bit hard to make comparisons between these sales numbers and overall sales, since collecting statistics on e-books is a relatively new practice that's still being worked out (not just for libraries, apparently :) Over the years, it's likely that e-book sales reporting will become more standardized and consistent. Still, even if some of the growth in numbers might be attributed to new data collection methods (and even sources) one can see a clear and growing trend in e-book sales. It's not a huge leap to at least partially attribute this new increase in sales (2008-2009) to the comparatively successful current wave of e-readers (in light of previous e-book reader "rounds"), most notably the Amazon Kindle. But just how "good" are these numbers? Take a look at the next section, but here's a quick preview to put things in comparison: The AAP estimates that August 2009 wholesale e-book sales in the US (the biggest single month for e-book sales ever) totaled $14.4 million, while print books, although only seeing a small month to month increase in sales, and still slightly lower than August of 2008, were at 1.55 billion (yes billion with a B). Even if we consider that there's as much as 50% underreporting on e-books in the industry right now (that's the AAPs own estimate) that means that in the US, August 2009 saw about $28.8 million in e-book sales, and 1.55 billion in print book sales. In August 2009, e-books only accounted for 1.88% ($28,800,000/$1,528,800,000) of the entire wholesale book market (e-book plus print book). Clearly, e-books have a long way to go to becoming ubiquitous- let alone becoming the dominant method of delivery - but what about a few years from now? Let's consider the significant growth in e-book sales from September to August, 189.1 percent, to be sustainable (which is questionable, an annual growth rate that nearly doubles sales will eventually start to taper off). Extrapolating that out (as an average annual growth rate of 189.1%), some time in 2013 annual e-book sales would be close to monthly print book sales (in the $1 billion+ range). Keep in mind that U.S. publishers had net sales of $25.0 billion in 2007, and a slightly less rosy 24.3 billion in 2008 (n.b. for the last six years, "the industry had a compound annual growth rate of 1.6%").16,18 Let's assume that print book sales remain flat, on average, for the foreseeable future (possible, since at some point increased sales of e-books, if they are on the way to becoming the dominant consumption format, will start to have a direct correlation with a decrease in print book sales). Given that, the earliest we are likely to hit the tipping point, where the default mode of consumption is electronic, will be sometime in late 2016 or early 2017. Of course, this very simple analysis doesn't account for a wide range of factors: is the growth in the e-book sales rate sustainable (if not, then it will take longer), is there a new development on the horizon that will place more digital consumption devices into the hand of more consumers (not just dedicated e-readers, but netbooks, smart phones, and any number of tiny devices, now that several new flexible/foldable screen technologies are popping up, removing the portable device size from being the limiting factor on screen size). Well, you get the picture. There are far too many "what ifs" and unknowns in the area of e-books to make any solid predictions. So, please keep that in mind as you read on; these numbers I am running are not predictions, merely extrapolations. I personally think 2016/2017 is a bit early for the start of e-books reign supreme.

Wholesale E-book Sales (in dollars), the "Rosy" extrapolation

2008 entry is actual data from the AAP, but 2009 on is all extrapolation based on an annual growth rate of 189.1%. Print book wholesale for the US in 2008 was $24,300,000,000.

  • 2008: 53,500,000
  • 2009: 101,168,500
  • 2010: 191,309,633
  • 2011: 336,132,814
  • 2012: 684,100,484
  • 2013: 1,293,634,014
  • 2014: 2,446,261,921
  • 2015: 4,625,881,293
  • 2016: 8,747,541,525
  • 2017: 16,541,601,023
  • 2018: 31,280,167,536
  • 2019: 59,150,796,811
  • 2020: 111,854,156,769

Book (print) Sales

"Book sales tracked by the Association of American Publishers (AAP) for the month of August increased by 0.9 percent at $1.55 billion and were up by 2.0 percent for the year… Audio Book sales posted a decrease of 12.5 percent in August with sales totaling $12.9 million; sales to-date decreased by 25.1 percent. E-books sales reached $14.4 million, reflecting a 189.1 percent increase for August and a 177.3 percent increase year to-date… The Association of American Publishers is the national trade association of the U.S. book publishing industry. AAP's more than 300 members include most of the major commercial publishers in the United States, as well as smaller and non-profit publishers, university presses and scholarly societies—small and large."20

Book (in general, not e-books) Market Share, 2007

  • Barnes & Noble 17%
  • Borders Books and Music 13%
  • Amazon.com 10%
  • Other 60% 14

"In March, 2008, The Association of American Publishers (AAP) released its annual estimate of total book sales in the United States. The report, which uses data from the Bureau of the Census as well as sales data from eighty-one publishers inclusive of all major book publishing media market holders, estimates that U.S. publishers had net sales of $24.3 billion in 2008, down from $25.0 billion in 2007, representing a 2.8% decrease. In the last six years the industry had a compound annual growth rate (CAGR) of 1.6%... The Higher Education category, which includes sales of college textbooks, fared better. Total sales reached $3.8 billion this year up 2.7% on 2007. This brought the CAGR for college textbooks to 3.8%." 18

US Reading Habits

"Forty-five percent of Americans over the age of 13 read a book last year," 17 so the majority of Americans over the age of 13, 55% didn't read even one book in 2008. T_T

Kindle by the numbers (or as close as we can get)

Kindle titles available from Amazon: 240,0001

Kindle Cumulative Revenue Estimate by 2010 (Dollar value, all models - does not include revenue from e-book titles sales from amazon.com) : $1.2 Billion1

Total number of Kindles sold since release (all models): 500,000 (as of Feb 2009) 4

Kindle Quotes

"Amazon does not release sales figures for its Kindle or Kindle 2 reader." 1

"According to O'Reilly research, books were the fastest-growing category in Apple's App Store in the 12 weeks ending in March 1…. current leader… is Stanza… 7 million e-books downloads since launching in mid-2008… half of [the] 100,000 available titles are free… paid books account for about 25,000 to 40,000 downloads." 1

"Perhaps the Kindle is not the iPod of books, as it was once hailed…but… Amazon may now be settling for becoming 'the iTunes of Books… and it's hoping some customers will still buy a few kindles' even if they can read those books somewhere else"1

"'We want you to read your Kindle books on laptops and smartphones, anything with an installed base,'" Mr. Bezos said. He said he was not 'in principle' against making the works available on rival devices like Sony's, but was focused on platforms with 'large installed bases'."2

"Amazon charges $11.99 for most best-sellers, but textbooks and solid non-fiction titles can cost considerably more." 3

"Yesterday, the world's largest Internet retailer unveiled its upgraded Kindle 2, hoping to expand its ownership base, which is believed to number more than 500,000 users (Amazon has refused to publicly divulge the number of Kindles it has sold)… Sales of digital books are rising, but slowly. E-books represent only about 1 per cent of sales for most publishers, many of which are scrambling to find new distribution models and pricing schemes that will attract readers… Wholesale revenue from digital book sales in the United States has shot up 183 per cent over the past two years, from $4.9-million (U.S.) in the third quarter of 2006 to $13.9-million in the third quarter of 2008, according to data from the International Digital Publishing Forum. Analysts, however, suggest the retail market for e-books could be worth as much as $100-million." 4

"Although Bezos has declined to break out exact numbers, he suggested over the summer that Kindle-related sales have brought in 35 percent of his company's book-related revenue." 5

"According to the latest research from Bowker's PubTrack Consumer service, desktop and laptop computers were the preferred way for the public to read e-books through the first seven months of 2009, but their market share has been giving way to a host of new devices… Of e-book downloads through July, 40% were made to computers, down from 48% at the end of the first quarter. Quickly gaining in market share over the summer were downloads to the Kindle. This was especially true in July, when downloads to computers plunged, while downloads to the Kindle soared. As a result, in July, for the first time in PubTrack's monthly survey of consumers, Kindle downloads topped computers, accounting for 45% of all e-book downloads in the month."
[So the Kindle is doing great as far as market share within the e-book sector, basically pushing everybody else out of that market, but does that translate into moving print book consumers over to electronic consumption as well? Only time will tell.] 6

"Forrester Research recently raised its forecast for the electronic book sales and is now expecting 3 [million] e-readers to be sold in the US in 2009, up from a previous estimate of 2 [million], with 900,000 of the devices expected to be sold in November and December …Forrester said Kindle leads the category in the US with nearly 60 per cent of market share, followed by Sony with 35 per cent, and other devices accounting for about 5 per cent. It noted that US e-book sales were up 149 per cent for the year as of June, now accounting for $14 [million] in sales per month, according to the Association of American Publishers. Amazon has not made public sales figures for Kindle… Forrester is predicting that e-reader sales could increase to at least 6 [million] units in 2010, as increasing competition lowers prices" 7

"It is an experiment that has made back-to-school a little easier on the back: Amazon.com gave more than 200 college students its Kindle e-reading device this fall, loaded with digital versions of their textbooks. But some students miss the decidedly low-tech conveniences of paper: highlighting, flagging pages with sticky notes, and scribbling in the margins… Becerra tried typing notes on the Kindle's small keyboard, but when she went back to reread them she found they were laden with typos and didn't make sense. After a month, she says, she takes far fewer notes and relies on the Kindle's highlighter tool instead… When the Associated Press hit five test campuses to ask students how they felt about the Kindle, the responses were lukewarm… Madeline Kraizel, a freshman at Case Western Reserve University in Cleveland, has amassed three Kindle pages of bookmarks for her chemistry textbook. That is getting unwieldy, and she is not sure whether there is a better way to organize them… Other students struggled when professors had them read documents in PDF format, which does not show well on the Kindle. Users cannot zoom in or make notes on them, and diagrams sometimes get separated from notes explaining them… it can't be backlit, disappointing one student who wants to read during dark early-morning bus commutes." 8

"Analysts are bullish over the industry's prospects. Three million e-readers will be sold in the US this year, with the Kindle taking a 60 per cent market share and the Sony Reader 35 per cent, according to Sarah Rotman Epps of Forrester. 'We expect sales in 2010 to double, bringing cumulative sales of e-readers to 10 million by year end,' she said. Mr. Weiner said 2010 would be 'the year of the e-reader'" 9

"By all accounts, e-readers are set to have a breakout year. Slightly more than one million of them were sold globally in 2008, according to the market research firm iSuppli. The firm predicts that 5.2 million will be sold this year, more than half of them in North America, driven by the popularity and promotion of the Kindle, which is available only through Amazon's Web site... One challenge for the entire digital reading market is the price of these new devices. A recent report from Forrester Research suggests most consumers will buy a digital reading device only when they cost less than $100. One way this could ultimately happen is if wireless providers like Verizon subsidize the devices and sell them in their stores, as they do with the inexpensive laptops called netbooks. Verizon says it has no plans to do this, but analysts think that could conceivably change if e-readers like the iRex sell well. ''If this becomes a revenue stream for a company like Verizon, which actually gets paid for the bandwidth required to distribute content, then it is in Verizon's benefit to promote these devices and in many cases underwrite them,'' said Allen Weiner, an analyst at Gartner." 10

"E-book readers from Amazon and Sony have gotten lots of media attention, but a recent survey shows that consumers are not yet sold on the devices. More than 40% of the more than 2,000 U.S. adults surveyed by the NPD Group said they were "somewhat uninterested or "not interested at all" in buying an e-reader. Of those respondents, nearly 70% said they preferred the feel of an actual book… NPD's findings, released Thursday, were in line with comments from analysts recently interviewed by InformationWeek. Those industry observers said the biggest hurdle faced by e-reader makers was in moving mainstream consumers away from physical books. E-readers today appeal mostly to avid readers and people who travel regularly." 11

"The Kindle is expected to generate $310 million in revenue by the end of 2009. Barron's estimates that annual sales could reach $2 billion by 2012" 12

"However, some analysts also feel that the e-reader industry will need to make fairly substantial changes if it wants to collectively make its devices as ubiquitous as possible. In a September research note, Forrester analyst Sarah Rotman Epps suggested that Amazon.com will need to ultimately lower its price point… The cost of the display component is high and sales volumes are still modest, yet consumers demand and expect ever-lower prices," Epps wrote. "The bottom line: E-reader product strategists will have to educate consumers and innovate to bring prices down. Even if they are entirely successful at both these feats, e-readers will never be mass-market devices like MP3 players."15

"At the start of the semester in August, the 18 students in his Human Experience course each got a Kindle DX, Amazon's newest e-reader, loaded with the syllabus, textbook and assigned readings. They'll return them when the semester ends…. 'There seems to be just a groundswell of support for these readers,' Herring said. 'It became clear this was indeed a way in which things were headed. We decided, "Why don't we get several of these and look at them?"' Winthrop spent $14,000, mostly from student fees, on the year-long test run, which put the school in the company of several universities around the country also experimenting with Kindles. About a month into the semester at Winthrop, the device has yet to garner many fans. 'There's got to be someone in here who doesn't hate it,' Herring said one morning. 'Where?' a student said. The class laughed…. In an article titled 'Kindles yet to woo University users,' the student newspaper, The Daily Princetonian, quoted several students who 'found the Kindles disappointing and difficult to use.'"19

  1. MacMilan. "Amazon's Apple Deal: Kindle Cannibal?" Business Week (Online), March 5, 2009
  2. "Amazon's Kindle wireless reader to be available worldwide." The Irish Times, October 8, 2009
  3. Frith. "Eyestrain could singe Kindle early adopters" The Australian, October 13, 2009 Tuesday
  4. Hartley. "A new chapter for digital books; Amazon is hoping to light a fire under the e-book market with its Kindle 2 - a device that has no shortage of competition" The Globe and Mail, February 10, 2009
  5. "Amazon Slashes Prices for Kindle" eweek.com October 7, 2009
  6. Milliot. "Kindle Market Share on the Rise" Publishers Weekly. Aug 31, 2009. 256(35) p. 4
  7. Birchall& Bradshaw. "E-reader sales set to rise as Amazon cuts Kindle price." Financial Times. Oct 8, 2009 p. 16
  8. Mintz. "Students unready to trade texts for Kindle" The Boston Globe, Business p. 8, October 14, 2009
  9. Clark. "Amazon takes the Kindle global as e-readers soar; Device goes on sale in UK for first time but downloads to cost more than in US" The Independent (London) Business p. 42 October 8, 2009
  10. Stone. "Growing U.S. e-reader market gets a new player; New iRex and Best Buy join forces to challenge Kindle and Sony Reader" The International Herald Tribune, Finance p. 17, September 24, 2009.
  11. E-Book Readers Lack Appeal; Amazon's Kindle and Sony's Reader have gotten lots of media attention, but a survey shows that consumers are not yet sold on the devices." InformationWeek August 6, 2009
  12. Wired magazine, page 114 Sept. 2009
  13. http://www.idpf.org/doc_library/industrystats.htm
  14. "Leading Book Retailers, 2007." Market Share Reporter. Ed. Robert S. Lazich and Virgil L. Burton, III. 2009 ed. Detroit: Gale, 2009
  15. "Amazon Settles Kindle Suit But Will Other Issues Follow" eWeek.com, October 3, 2009
  16. "AAP Reports Book Sales Rose to $ 25 Billion in 2007" Association of American Publishers, March 31, 2008.
  17. "Nearly One in Two Americans Read a Book Last Year, According to Bowker's 2008 PubTrack Consumer Survey" Bowker, May 29, 2009.
  18. "AAP Reports Book Sales Reached $24.3 Billion in 2008" Association of American Publishers
  19. Cetrone. "Winthrop professor uses Kindle to spark new age of learning: But response to e-reader lukewarm" McClatchy - Tribune Business News. Oct 5, 2009.
  20. Book Publishing Sales Post Small Gains in August, The Association of American Publishers, October 21, 2009