APA (7th ed.) Citation

United States. Environmental Protection Agency. Office of Water. (2001). Ecoregional nutrient criteria: Fact sheet. United States Environmental Protection Agency, Office of Water.

Chicago Style (17th ed.) Citation

United States. Environmental Protection Agency. Office of Water. Ecoregional Nutrient Criteria: Fact Sheet. [Washington, D.C.]: United States Environmental Protection Agency, Office of Water, 2001.

MLA (9th ed.) Citation

United States. Environmental Protection Agency. Office of Water. Ecoregional Nutrient Criteria: Fact Sheet. United States Environmental Protection Agency, Office of Water, 2001.