Cita APA (7a ed.)

Darwin, C. (1988). Variation of animals and plants under domestication. Pickering and Chatto.

Cita Chicago Style (17a ed.)

Darwin, Charles. Variation of Animals and Plants Under Domestication. London: Pickering and Chatto, 1988.

Cita MLA (9a ed.)

Darwin, Charles. Variation of Animals and Plants Under Domestication. Pickering and Chatto, 1988.