APA (7th ed.) Citation

Darwin, C. (1899). The origin of species by means of natural selection or the preservation of favoured races in the struggle for life (6. ed., 56. Tsd.). Murray.

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. 6. ed., 56. Tsd. London: Murray, 1899.

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. 6. ed., 56. Tsd. Murray, 1899.