APA (7th ed.) Zitazioa

Baer, J. (2013). Youtility: Why smart marketing is about help not hype. Portfolio/Penguin.

Chicago Style (17th ed.) Zitazioa

Baer, Jay. Youtility: Why Smart Marketing Is About Help Not Hype. New York, New York: Portfolio/Penguin, 2013.

MLA (9th ed.) Zitazioa

Baer, Jay. Youtility: Why Smart Marketing Is About Help Not Hype. Portfolio/Penguin, 2013.