APA-referens (7:e uppl.)
ebrary, Inc. (2003). Proven tactics in viral marketing: Online games, quizzes, eCards, contests & "buzz" building. MarketingSherpa, Inc..
Chicago-referens (17:e uppl.)
ebrary, Inc. Proven Tactics in Viral Marketing: Online Games, Quizzes, ECards, Contests & "Buzz" Building. Portsmouth, R.I.: MarketingSherpa, Inc., 2003.
MLA-referens (9:e uppl.)
ebrary, Inc. Proven Tactics in Viral Marketing: Online Games, Quizzes, ECards, Contests & "Buzz" Building. MarketingSherpa, Inc., 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.