Behler, J. L., & King, F. W. (1997). The National Audubon Society field guide to North American reptiles and amphibians. Knopf : Distributed by Random House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBehler, John L., और F. Wayne King. The National Audubon Society Field Guide to North American Reptiles and Amphibians. New York: Knopf : Distributed by Random House, 1997.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBehler, John L., और F. Wayne King. The National Audubon Society Field Guide to North American Reptiles and Amphibians. Knopf : Distributed by Random House, 1997.
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