| Hodge,
Robert Parker. 1976.
Amphibians and Reptiles in Alaska,
the Yukon, and Northwest Territories
Anchorage, AK: Alaska Northwest Publishing Co. 89 pp.
Jones,
Lawrence L.C., William P. Leonard, and Deanna H. Olson, eds. 2005.
Amphibians of the Pacific Northwest
Seattle, WA: Seattle Audubon Society. 304 pp.

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