Nicholls, H. (2014). The Galapagos: A natural history. Basic Books, a member of the Perseus Books Group.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNicholls, Henry. The Galapagos: A Natural History. New York: Basic Books, a member of the Perseus Books Group, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNicholls, Henry. The Galapagos: A Natural History. Basic Books, a member of the Perseus Books Group, 2014.
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