APA (7th ed.) Citation

Darwin, C. (1974). The origin of species: By means of natural selection or, The preservation of favoured races in the struggle for life. Collier.

Chicago Style (17th ed.) Citation

Darwin, Charles. The Origin of Species: By Means of Natural Selection or, The Preservation of Favoured Races in the Struggle for Life. New York ; London: Collier, 1974.

MLA (9th ed.) Citation

Darwin, Charles. The Origin of Species: By Means of Natural Selection or, The Preservation of Favoured Races in the Struggle for Life. Collier, 1974.