Darwin Charles. (1890). Journal of researches into the natural history and geology of the countries visited during the voyage of H.M.S. Beagle, round the world, under the command of captain Fitz Roy, R.N. By Charles Darwin, M.A., F.R.S. From the corrected and enlarged edition of 1845. With a biographical introduction. Ninth edition (9a. ed.). Ward, Lock and Co.
Παραπομπή σε μορφή Chicago (17η εκδ.)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, Under the Command of Captain Fitz Roy, R.N. By Charles Darwin, M.A., F.R.S. From the Corrected and Enlarged Edition of 1845. With a Biographical Introduction. Ninth Edition. 9a. ed. Londres: Ward, Lock and Co, 1890.
Παραπομπή σε μορφή MLA (9th εκδ.)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, Under the Command of Captain Fitz Roy, R.N. By Charles Darwin, M.A., F.R.S. From the Corrected and Enlarged Edition of 1845. With a Biographical Introduction. Ninth Edition. 9a. ed. Ward, Lock and Co, 1890.