Darwin, C., Barrett, P. H., & Freeman, R. B. (1986). The zoology of the voyage of H. M. S. beagle, pt. 3: Birds. Pickering.
Chicago Style (17th ed.) CitationDarwin, Charles, Paul H. Barrett, and R. B. Freeman. The Zoology of the Voyage of H. M. S. Beagle, Pt. 3: Birds. London: Pickering, 1986.
MLA (8th ed.) CitationDarwin, Charles, et al. The Zoology of the Voyage of H. M. S. Beagle, Pt. 3: Birds. Pickering, 1986.
Warning: These citations may not always be 100% accurate.