APA (7 ম সংস্করণ) উদ্ধৃতি

Darwin, C., Barrett, P. H., & Freeman, R. B. (1988). The various contrivances by which orchids are fertilized by insects. Pickering.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Darwin, Charles, Paul H. Barrett, এবং R. B. Freeman. The Various Contrivances by Which Orchids Are Fertilized by Insects. London: Pickering, 1988.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Darwin, Charles, et al. The Various Contrivances by Which Orchids Are Fertilized by Insects. Pickering, 1988.