Evans, E. (2015). The economics of free: Freemium games, branding and the impatience economy. Sage.
Chicago Style (17th ed.) CitationEvans, Elizabeth. The Economics of Free: Freemium Games, Branding and the Impatience Economy. Sage, 2015.
MLA (9th ed.) CitationEvans, Elizabeth. The Economics of Free: Freemium Games, Branding and the Impatience Economy. Sage, 2015.
Warning: These citations may not always be 100% accurate.