APA (7th ed.) Citation

United States. Environmental Protection Agency. Office of Water. (2000). Vegetated roof cover: Philadelphia, Pennsylvania. United States Environmental Protection Agency, Office of Water.

Chicago Style (17th ed.) Citation

United States. Environmental Protection Agency. Office of Water. Vegetated Roof Cover: Philadelphia, Pennsylvania. [Washington, D.C.]: United States Environmental Protection Agency, Office of Water, 2000.

MLA (9th ed.) Citation

United States. Environmental Protection Agency. Office of Water. Vegetated Roof Cover: Philadelphia, Pennsylvania. United States Environmental Protection Agency, Office of Water, 2000.