APA (7e ed.) Bronvermelding

Darwin, C., Barrett, P. H., & Freeman, R. B. (1989). The descent of man, and selection in relation to sex, 2. Pickering.

Chicago (17e ed.) Bronvermelding

Darwin, Charles, Paul H. Barrett, en R. B. Freeman. The Descent of Man, and Selection in Relation to Sex, 2. London: Pickering, 1989.

MLA (8e ed.) Bronvermelding

Darwin, Charles, et al. The Descent of Man, and Selection in Relation to Sex, 2. Pickering, 1989.