Opheodrys (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Opheodrys" in English language version.

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cnah.org

Wright AH, Wright AA (1957). Handbook of Snakes of the United States and Canada. Ithaca and London: Comstock. 1,105 pp. (in 2 volumes). (Genus Opheodrys, pp. 551–564, Figures 164–166, Map 43).
Smith HM, Brodie ED Jr (1982). Reptiles of North America: A Guide to Field Identification. New York: Golden Press. 240 pp. ISBN 0-307-13666-3. (Opheodrys, pp. 188–189).
Behler JL, King FW (1979). The Audubon Society Field Guide to North American Reptiles and Amphibians. New York: Alfred A. Knopf. 743 pp. ISBN 0-394-50824-6. (Opheodrys, pp. 639–641+ Plates 475–477).