APA (7th ed.) Citation

Rafferty, J. P. (2011). The cenozoic era: Age of mammals. Britannica Educational Publishing.

Chicago Style (17th ed.) Citation

Rafferty, John P. The Cenozoic Era: Age of Mammals. New York: Britannica Educational Publishing, 2011.

MLA (9th ed.) Citation

Rafferty, John P. The Cenozoic Era: Age of Mammals. Britannica Educational Publishing, 2011.