Darwin, C. (1996). The origin of species by means of natural selection: The descent of man and selection in relation to sex (2nd, 6th print.). Encyclopædia Britannica.
Style de citation Chicago (17e éd.)Darwin, Charles. The Origin of Species by Means of Natural Selection: The Descent of Man and Selection in Relation to Sex. 2nd, 6th print. Chicago: Encyclopædia Britannica, 1996.
Style de citation MLA (9e éd.)Darwin, Charles. The Origin of Species by Means of Natural Selection: The Descent of Man and Selection in Relation to Sex. 2nd, 6th print. Encyclopædia Britannica, 1996.
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