Boyd, R. (2003). How humans evolved. New York: W. W. Norton & Company.
Trích dẫn kiểu ChicagoBoyd, Robert. How Humans Evolved. New York: W. W. Norton & Company, 2003.
MLA citiranjeBoyd, Robert. How Humans Evolved. New York: W. W. Norton & Company, 2003.
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