Cita APA

Darwin, C. (1975). The origin of species by means of natural selection or the preservation of favored races in the struggle for life. Harmondsworth: Peguin Books.

Citación estilo Chicago

Darwin, Charles. The Origin of Species By Means of Natural Selection or the Preservation of Favored Races in the Struggle for Life. Harmondsworth: Peguin Books, 1975.

Cita MLA

Darwin, Charles. The Origin of Species By Means of Natural Selection or the Preservation of Favored Races in the Struggle for Life. Harmondsworth: Peguin Books, 1975.