APA (7th ed.) Citation

Muths, E. (2012). The state of amphibians in the United States. U.S. Department of the Interior, U.S. Geological Survey, Amphibian Research and Monitoring Initiative.

Chicago Style (17th ed.) Citation

Muths, Erin. The State of Amphibians in the United States. [Reston, Va.]: U.S. Department of the Interior, U.S. Geological Survey, Amphibian Research and Monitoring Initiative, 2012.

MLA (9th ed.) Citation

Muths, Erin. The State of Amphibians in the United States. U.S. Department of the Interior, U.S. Geological Survey, Amphibian Research and Monitoring Initiative, 2012.