Darwin, C. (1894). Journal of researches into the natural history and geology of the countries visited during the voyage of H.M.S. Beagle round the world (12th ed.). Ward, Lock and Bowden.

Darwin, Charles. Journal of Researches into the Natural History and Geology of the Countries Visited During the Voyage of H.M.S. Beagle Round the World. 12th ed. London: Ward, Lock and Bowden, 1894.

Darwin, Charles. Journal of Researches into the Natural History and Geology of the Countries Visited During the Voyage of H.M.S. Beagle Round the World. 12th ed. Ward, Lock and Bowden, 1894.