APA (7th ed.) Citation

Darwin, C. (1958). The Origin of species: By means of natural selection or the preservation of favoured races in the struggle for life. New American Library.

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: New American Library, 1958.

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. New American Library, 1958.