APA (7th ed.) Zitazioa

Billington, R. (2002). Religion without god. Routledge.

Chicago Style (17th ed.) Zitazioa

Billington, Ray. Religion Without God. London: Routledge, 2002.

MLA (9th ed.) Zitazioa

Billington, Ray. Religion Without God. Routledge, 2002.