Darwin, C. (1952). Journal of researches into the geology and natural history of the various countries visited by H.M.S. Beagle. Hafner Pub. Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDarwin, Charles. Journal of Researches into the Geology and Natural History of the Various Countries Visited by H.M.S. Beagle. Hafner Pub. Co., 1952.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDarwin, Charles. Journal of Researches into the Geology and Natural History of the Various Countries Visited by H.M.S. Beagle. Hafner Pub. Co., 1952.
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