APA Citation

Boyd, R., & Silk, J. B. (1997). How humans evolved. New York: W. W. Norton.

Chicago Style Citation

Boyd, Robert., and Joan B. Silk. How Humans Evolved. New York: W. W. Norton, 1997.

MLA Citation

Boyd, Robert., and Joan B. Silk. How Humans Evolved. New York: W. W. Norton, 1997.

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