APA (7th ed.) Citation

Sapolsky, R. M., & Berkrot, P. (2012). Why zebras don't get ulcers (Unabridged.). Tantor Media.

Chicago Style (17th ed.) Citation

Sapolsky, Robert M., and Peter Berkrot. Why Zebras Don't Get Ulcers. Unabridged. Old Saybrook: Tantor Media, 2012.

MLA (8th ed.) Citation

Sapolsky, Robert M., and Peter Berkrot. Why Zebras Don't Get Ulcers. Unabridged. Tantor Media, 2012.

Warning: These citations may not always be 100% accurate.