Darwin, C. (1951). The origin of species by means of natural selection: Or, The preservation of favoured races in the struggle for life. Oxford University Press.
Chicago Style (17th ed.) CitationDarwin, Charles. The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life. London, New York: Oxford University Press, 1951.
MLA (9th ed.) CitationDarwin, Charles. The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life. Oxford University Press, 1951.
Warning: These citations may not always be 100% accurate.