APA Edition Citation

Boyd, R., & Silk, J. B. (2006). How humans evolved (Fourth.). W.W.norton&company.

Chicago Edition Citation

Boyd, Robert, and Joan B. Silk. How Humans Evolved. Fourth. New York: W.W.norton&company, 2006.

MLA Edition Citation

Boyd, Robert, and Joan B. Silk. How Humans Evolved. Fourth. W.W.norton&company, 2006.

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