APA Style

Boyd, Robert, Silk, Joan B. (2012). How humans evolved (6th ed). New York: W.W. Norton & Company, Inc..

Chicago Style

Boyd, Robert, Silk, Joan B. How humans evolved. 6th ed New York: W.W. Norton & Company, Inc., 2012. Books.

MLA Style

Boyd, Robert, Silk, Joan B. How humans evolved. 6th ed New York: W.W. Norton & Company, Inc., 2012. Books.

Turabian Style

Boyd, Robert, Silk, Joan B. How humans evolved. 6th ed New York: W.W. Norton & Company, Inc., 2012. Books.