APA Style

Boyd, R., Silk, J, B. (2012). How Humans Evolved 6 Ed. (6). New York: W.W. Norton & Company.

MLA Style

Boyd, Robert., Silk, Joan, B.. "How Humans Evolved 6 Ed.". 6 New York: W.W. Norton & Company, 2012. Perpustakaan KALBIS.