Conant, R. and Collins, J.T. 1991. A Field Guide to Reptiles and Amphibians: Eastern and Central North America. Third Edition. Houghton Mifflin Company, Boston, Massachusetts.
Ernst, C.H. and Barbour, R.W. 1989. Snakes of Eastern North America. George Mason University Press, Fairfax, Virginia. 282 pp.
Ernst, C.H. and Ernst, E.M. 2003. Snakes of the United States and Canada. Smithsonian Books, Washington, D.C.
Gibbons, J.W. and Dorcas, M.E. 2004. North American Watersnakes: A Natural History. University of Oklahoma Press, Norman, Oklahoma. xxvi + 439 pp.
Hammerson, G.A. 1999. Amphibians and reptiles in Colorado. Second edition. University Press of Colorado, Boulder, Colorado.
IUCN. 2007. 2007 IUCN Red List of Threatened Species. Available at: www.iucnredlist.org. (Accessed: 12th September 2007).
Mount, R.H. 1975. The Reptiles and Amphibians of Alabama. Auburn University Agricultural Experiment Station, Auburn, Alabama. vii + 347 pp.
|Citation:||Hammerson, G.A. 2007. Nerodia sipedon. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 26 July 2014.|
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