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