APA (7th ed.) Zitazioa

Foy, D. (2004). First principles: A return to humanity's shared traditions. Algora Pub..

Chicago Style (17th ed.) Zitazioa

Foy, Don. First Principles: A Return to Humanity's Shared Traditions. New York: Algora Pub., 2004.

MLA (9th ed.) Zitazioa

Foy, Don. First Principles: A Return to Humanity's Shared Traditions. Algora Pub., 2004.