Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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