APA (7th ed.) Zitazioa

Beale, B. (2001). Men: From stone age to clone age. Penguin.

Chicago Style (17th ed.) Zitazioa

Beale, Bob. Men: From Stone Age to Clone Age. New Delhi: Penguin, 2001.

MLA (9th ed.) Zitazioa

Beale, Bob. Men: From Stone Age to Clone Age. Penguin, 2001.