Darwin, C. (2003). On the origin of species by means of natural selection: Or the preservation of favoured races in the struggle for life. Wildside Press.
Chicago-viite (17. p.)Darwin, Charles. On the Origin of Species by Means of Natural Selection: Or the Preservation of Favoured Races in the Struggle for Life. Holicong, PA: Wildside Press, 2003.
MLA-viite (8. p.)Darwin, Charles. On the Origin of Species by Means of Natural Selection: Or the Preservation of Favoured Races in the Struggle for Life. Wildside Press, 2003.
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