Cita APA (7a ed.)
Darwin, C., & Beer, G. (2008). On the origin of species (Rev. ed.). Oxford University Press.
Cita Chicago Style (17a ed.)
Darwin, Charles, y Gillian Beer. On the Origin of Species. Rev. ed. New York: Oxford University Press, 2008.
Cita MLA (9a ed.)
Darwin, Charles, y Gillian Beer. On the Origin of Species. Rev. ed. Oxford University Press, 2008.
Precaución: Estas citas no son 100% exactas.