Darwin, C. (1899). The origin of species by means of natural selection or the preservation of favoured races in the struggle for life (6. ed., 56. Tsd.). Murray.
Chicago-Zitierstil (17. Ausg.)Darwin, Charles. The Origin of Species by Means of Natural Selection or the Preservation of Favoured Races in the Struggle for Life. 6. ed., 56. Tsd. London: Murray, 1899.
MLA-Zitierstil (9. Ausg.)Darwin, Charles. The Origin of Species by Means of Natural Selection or the Preservation of Favoured Races in the Struggle for Life. 6. ed., 56. Tsd. Murray, 1899.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.