Cita APA (7th ed.)
Boyd, G. A., & Edward K. Boyd. (1994). Letters from a skeptic. Chariot victor.
Cita Chicago (17th ed.)
Boyd, Gregory A., i Edward K. Boyd. Letters from a Skeptic. Colorado: Chariot victor, 1994.
Cita MLA (9th ed.)
Boyd, Gregory A., i Edward K. Boyd. Letters from a Skeptic. Chariot victor, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.