Cita APA (7th ed.)
Gadd, P. (1984). Human and social biology (3rd ed.). McMillan.
Cita Chicago (17th ed.)
Gadd, P. Human and Social Biology. 3rd ed. London: McMillan, 1984.
Cita MLA (9th ed.)
Gadd, P. Human and Social Biology. 3rd ed. McMillan, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.