Ends Sourcing From Amazon, Users Fear Lost Books”. PaidContent: The Economics of Digital Content. Gigaom. 29 November 2012閲覧。 ^ “The Announcement You've
2016閲覧。 公式ウェブサイト "The Truth About Amazon Publishing", Laura Hazard Owen, PaidContent.org, Nov 2, 2011. "Uncovering Amazon Publishing", David Streitfeld, New
Issue Media Works To Build The Storefront Before The Audience Arrives.”. PaidContent (June 29, 2011). September 14, 2011時点のオリジナルよりアーカイブ。November 3, 2011閲覧。