United States. Environmental Protection Agency. Office of Water. (2001). Fact sheet: 1999 Drinking Water Infrastructure Needs Survey--American Indian and Alaska native village water systems. United States Environmental Protection Agency, Office of Water.
Chicago Style (17th ed.) CitationUnited States. Environmental Protection Agency. Office of Water. Fact Sheet: 1999 Drinking Water Infrastructure Needs Survey--American Indian and Alaska Native Village Water Systems. [Washington, D.C.]: United States Environmental Protection Agency, Office of Water, 2001.
MLA (9th ed.) CitationUnited States. Environmental Protection Agency. Office of Water. Fact Sheet: 1999 Drinking Water Infrastructure Needs Survey--American Indian and Alaska Native Village Water Systems. United States Environmental Protection Agency, Office of Water, 2001.