APA (7th ed.) Citation

United States. Environmental Protection Agency. Office of Air Quality Planning and Standards. (2001). Visibility in mandatory Federal Class I areas, 1994-1998: A report to Congress. U.S. Environmental Protection Agengy, Office of Air Quality Planning and Standards.

Chicago Style (17th ed.) Citation

United States. Environmental Protection Agency. Office of Air Quality Planning and Standards. Visibility in Mandatory Federal Class I Areas, 1994-1998: A Report to Congress. Research Triangle Park, NC: U.S. Environmental Protection Agengy, Office of Air Quality Planning and Standards, 2001.

MLA (9th ed.) Citation

United States. Environmental Protection Agency. Office of Air Quality Planning and Standards. Visibility in Mandatory Federal Class I Areas, 1994-1998: A Report to Congress. U.S. Environmental Protection Agengy, Office of Air Quality Planning and Standards, 2001.