APA-referens (7:e uppl.)
Darwin, C. (2001). On the origin of species by means of natural selection: Or, The Preservation of favoured races in the struggle for life. Electric Book Co..
Chicago-referens (17:e uppl.)
Darwin, Charles. On the Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life. London: Electric Book Co., 2001.
MLA-referens (9:e uppl.)
Darwin, Charles. On the Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life. Electric Book Co., 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.