Desmond, Adrian; Moore, James (1990). Darwin. Londres: Michael Joseph, the Penguin Group. ISBN0-7181-3430-3.La referencia utiliza el parámetro obsoleto |coautores= (ayuda)
darwin-online.org.uk
Algunas observaciones en relación al Diluvio., CHAPTER XXVIII of – FitzRoy, Robert (1838). Narrative of the surveying voyages of His Majesty's Ships Adventure and Beagle between the years 1826 and 1836, describing their examination of the southern shores of South America, and the Beagle's circumnavigation of the globe. Proceedings of the second expedition, 1831-36, under the command of Captain Robert Fitz-Roy, R.N. Londres: Henry Colburn. See also Robert FitzRoy#HMS Beagle's second voyage.
