APA

Boyd R., Silk J. B., . (2006). How humans evolved. London: W.W. Norton.

Chicago

Boyd Robert, Silk Joan B, . 2006. How humans evolved. London: W.W. Norton.

Harvard

Boyd R., Silk J. B., . (2006). How humans evolved. London: W.W. Norton.

MLA

Boyd Robert, Silk Joan B, . How humans evolved. London: W.W. Norton. 2006.