United States. Environmental Protection Agency. Acid Rain Division. (1999). Acid Rain Program emissions scorecard 1997: SO₂, NOx, heat input, and CO₂ emission trends in the electric utility industry. U.S. Environmental Protection Agency, Air and Radiation, Acid Rain Division.
Chicago Style (17th ed.) CitationUnited States. Environmental Protection Agency. Acid Rain Division. Acid Rain Program Emissions Scorecard 1997: SO₂, NOx, Heat Input, and CO₂ Emission Trends in the Electric Utility Industry. Washington, D.C.: U.S. Environmental Protection Agency, Air and Radiation, Acid Rain Division, 1999.
MLA (9th ed.) CitationUnited States. Environmental Protection Agency. Acid Rain Division. Acid Rain Program Emissions Scorecard 1997: SO₂, NOx, Heat Input, and CO₂ Emission Trends in the Electric Utility Industry. U.S. Environmental Protection Agency, Air and Radiation, Acid Rain Division, 1999.