LEWIN, R. (1986). Human evolution: An Illustrated introduction (5th ed.). W.H. FREEMAN AND COMPANY.
Chicago-viite (17. p.)LEWIN, ROGER. Human Evolution: An Illustrated Introduction. 5th ed. New York: W.H. FREEMAN AND COMPANY, 1986.
MLA-viite (9. p.)LEWIN, ROGER. Human Evolution: An Illustrated Introduction. 5th ed. W.H. FREEMAN AND COMPANY, 1986.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.