Clegg E. J. (1968). The study of man: An introduction to human biology. Elsevier.
Cita Chicago (17th ed.)Clegg E. J. The Study of Man: An Introduction to Human Biology. New york: Elsevier, 1968.
Cita MLA (9th ed.)Clegg E. J. The Study of Man: An Introduction to Human Biology. Elsevier, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.