Cita APA (7th ed.)

Darwin, C. (1981). The descent of man, and selection in relation to sex. Princeton University Press.

Cita Chicago (17th ed.)

Darwin, Charles. The Descent of Man, and Selection in Relation to Sex. Princeton, N.J.: Princeton University Press, 1981.

Cita MLA (9th ed.)

Darwin, Charles. The Descent of Man, and Selection in Relation to Sex. Princeton University Press, 1981.