Darwin, C., Barrett, P. H., & Freeman, R. B. (1988). The various contrivances by which orchids are fertilized by insects. Pickering.
Chicago-Zitierstil (17. Ausg.)Darwin, Charles, Paul H. Barrett, und R. B. Freeman. The Various Contrivances by Which Orchids Are Fertilized by Insects. London: Pickering, 1988.
MLA-Zitierstil (8. Ausg.)Darwin, Charles, et al. The Various Contrivances by Which Orchids Are Fertilized by Insects. Pickering, 1988.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.