Darwin, C., Barrett, P. H., & Freeman, R. B. (1989). The descent of man, and selection in relation to sex, 1. Pickering.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDarwin, Charles, Paul H. Barrett, और R. B. Freeman. The Descent of Man, and Selection in Relation to Sex, 1. London: Pickering, 1989.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDarwin, Charles, et al. The Descent of Man, and Selection in Relation to Sex, 1. Pickering, 1989.
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