APA (7th ed.) Citation

Darwin, C., & Beer, G. (2008). On the origin of species (Rev. ed.). Oxford University Press.

Chicago Style (17th ed.) Citation

Darwin, Charles, and Gillian Beer. On the Origin of Species. Rev. ed. New York: Oxford University Press, 2008.

MLA (9th ed.) Citation

Darwin, Charles, and Gillian Beer. On the Origin of Species. Rev. ed. Oxford University Press, 2008.