APA (7th ed.) Citation

Boyd, R., & Silk, J. B. (2021). How humans evolved / Robert Boyd and Joan B. Silk (Ninth edition.). W.W. Norton & Company.

Chicago Style (17th ed.) Citation

Boyd, Robert, and Joan B. Silk. How Humans Evolved / Robert Boyd and Joan B. Silk. Ninth edition. New York: W.W. Norton & Company, 2021.

MLA (9th ed.) Citation

Boyd, Robert, and Joan B. Silk. How Humans Evolved / Robert Boyd and Joan B. Silk. Ninth edition. W.W. Norton & Company, 2021.

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