Darwin, C. (1987). The origin of species: By means of nature selection the descent of man: and selection in relation to sex.
Chicago Edition CitationDarwin, Charles. The Origin of Species: By Means of Nature Selection the Descent of Man: And Selection in Relation to Sex. Chicago, Encyclopaedia Britannica Inc, 1987.
MLA Edition CitationDarwin, Charles. The Origin of Species: By Means of Nature Selection the Descent of Man: And Selection in Relation to Sex. 1987.
Warning: These citations may not always be 100% accurate.