APA aipamena

Boyd, R. (2003). How humans evolved. New York: W. W. Norton & Company.

Chicago Style aipamena

Boyd, Robert. How Humans Evolved. New York: W. W. Norton & Company, 2003.

MLA aipamena

Boyd, Robert. How Humans Evolved. New York: W. W. Norton & Company, 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.