Darwin, C., Barrett, P. H., & Freeman, R. B. (1986). The geology of the voyage of H. M. S. beagle, Pt. 2: Geological observations on the volcanic islands. Pickering.
Čikaški stil citiranja (17. izdanje)Darwin, Charles, Paul H. Barrett, i R. B. Freeman. The Geology of the Voyage of H. M. S. Beagle, Pt. 2: Geological Observations on the Volcanic Islands. London: Pickering, 1986.
MLA način citiranja (8. izdanje)Darwin, Charles, et al. The Geology of the Voyage of H. M. S. Beagle, Pt. 2: Geological Observations on the Volcanic Islands. Pickering, 1986.
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