Cita APA (7th ed.)

Pfeiffer, J. E. (1972). The emergence of man (2nd edition.). Harper & Row.

Cita Chicago (17th ed.)

Pfeiffer, John E. The Emergence of Man. 2nd edition. New York: Harper & Row, 1972.

Cita MLA (9th ed.)

Pfeiffer, John E. The Emergence of Man. 2nd edition. Harper & Row, 1972.