The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
- Darwin, Charles. 1890. Journal of Researches Into the Natural History and Geology of the Countries Visited During the Voyage Round the World of H. M. S. 'Beagle' Under the Command of Captain Fitz Roy. New York City, NY : D. Appleton and Company; p. 278