Darwin, C., Barrett, P. H., & Freeman, R. B. (1986). The foundations of the origin of species: Two essays written in 1842 and 1844. Pickering.
Chicago-Zitierstil (17. Ausg.)Darwin, Charles, Paul H. Barrett, und R. B. Freeman. The Foundations of the Origin of Species: Two Essays Written in 1842 and 1844. London: Pickering, 1986.
MLA-Zitierstil (8. Ausg.)Darwin, Charles, et al. The Foundations of the Origin of Species: Two Essays Written in 1842 and 1844. Pickering, 1986.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.