APA (7th ed.) Citation

United States. Environmental Protection Agency. Office of Water & United States. Environmental Protection Agency. Office of Research and Development. (2009). National lakes assessment: A collaborative survey of the nation's lakes : draft. U.S. Environmental Protection Agency, Office of Water and Office of Research and Development.

Chicago Style (17th ed.) Citation

United States. Environmental Protection Agency. Office of Water and United States. Environmental Protection Agency. Office of Research and Development. National Lakes Assessment: A Collaborative Survey of the Nation's Lakes : Draft. Washington, DC: U.S. Environmental Protection Agency, Office of Water and Office of Research and Development, 2009.

MLA (9th ed.) Citation

United States. Environmental Protection Agency. Office of Water and United States. Environmental Protection Agency. Office of Research and Development. National Lakes Assessment: A Collaborative Survey of the Nation's Lakes : Draft. U.S. Environmental Protection Agency, Office of Water and Office of Research and Development, 2009.