APA (7th ed.) Citation

Caldwell, I., & Thomason, D. (2004). The rule of four. Dial Press.

Chicago Style (17th ed.) Citation

Caldwell, Ian, and Dustin Thomason. The Rule of Four. New York: Dial Press, 2004.

MLA (8th ed.) Citation

Caldwell, Ian, and Dustin Thomason. The Rule of Four. Dial Press, 2004.