APA Edition Citation

Boyd, R., & Silk, J. B. (2007). How Humans Evolved (4.).

Chicago Edition Citation

Boyd, Robert, and Joan B. Silk. How Humans Evolved. 4. NewYork, W W Norton Co, 2007.

MLA Edition Citation

Boyd, Robert, and Joan B. Silk. How Humans Evolved. 4. 2007.

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