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.
Cytowanie według stylu Chicago (wyd. 17)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.
Cytowanie według stylu MLA (wyd. 8)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.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..