APA (7th ed.) Citation

Boyd, G. A., & Boyd, E. K. (2008). Letters from a skeptic: A son wrestles with his father's questions about Christianity (2nd ed.). David C. Cook.

Chicago Style (17th ed.) Citation

Boyd, Gregory A., and Edward K. Boyd. Letters from a Skeptic: A Son Wrestles with His Father's Questions About Christianity. 2nd ed. Colorado Springs, Colo.: David C. Cook, 2008.

MLA (8th ed.) Citation

Boyd, Gregory A., and Edward K. Boyd. Letters from a Skeptic: A Son Wrestles with His Father's Questions About Christianity. 2nd ed. David C. Cook, 2008.