United States. Environmental Protection Agency. Emission Factor and Inventory Group. (1999). Emissions inventory guidance for implementation of ozone and particulate matter national ambient air quality standards (NAAQS) and regional haze regulations. Emission Factor and Inventory Group, Emissions Monitoring and Analysis Division, Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency.
Chicago Style (17th ed.) CitationUnited States. Environmental Protection Agency. Emission Factor and Inventory Group. Emissions Inventory Guidance for Implementation of Ozone and Particulate Matter National Ambient Air Quality Standards (NAAQS) and Regional Haze Regulations. Research Triangle Park, NC: Emission Factor and Inventory Group, Emissions Monitoring and Analysis Division, Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency, 1999.
MLA (9th ed.) CitationUnited States. Environmental Protection Agency. Emission Factor and Inventory Group. Emissions Inventory Guidance for Implementation of Ozone and Particulate Matter National Ambient Air Quality Standards (NAAQS) and Regional Haze Regulations. Emission Factor and Inventory Group, Emissions Monitoring and Analysis Division, Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency, 1999.