APA (7th ed.) Citation

Gemmell, D., & Gemmell, S. (2007). Troy: Fall of kings (1st American ed.). Ballantine Books.

Chicago Style (17th ed.) Citation

Gemmell, David, and Stella Gemmell. Troy: Fall of Kings. 1st American ed. New York: Ballantine Books, 2007.

MLA (9th ed.) Citation

Gemmell, David, and Stella Gemmell. Troy: Fall of Kings. 1st American ed. Ballantine Books, 2007.