Παραπομπή σε μορφή APA (7η εκδ.)

Darwin, C., Barrett, P. H., & Freeman, R. B. (1986). The geology of the voyage of H. M. S. beagle, pt. 3: Geological observations on South America. Pickering.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Darwin, Charles, Paul H. Barrett, και R. B. Freeman. The Geology of the Voyage of H. M. S. Beagle, Pt. 3: Geological Observations on South America. London: Pickering, 1986.

Παραπομπή σε μορφή MLA (8th εκδ.)

Darwin, Charles, et al. The Geology of the Voyage of H. M. S. Beagle, Pt. 3: Geological Observations on South America. Pickering, 1986.