United States. Environmental Protection Agency. Office of Acid Deposition, Environmental Monitoring and Quality Assurance. (1990). AERP status. U.S. Environmental Protection Agency, Office of Acid Deposition, Environmental Monitoring and Quality Assurance.
Chicago Style (17th ed.) CitationUnited States. Environmental Protection Agency. Office of Acid Deposition, Environmental Monitoring and Quality Assurance. AERP Status. Washington, DC: U.S. Environmental Protection Agency, Office of Acid Deposition, Environmental Monitoring and Quality Assurance, 1990.
MLA (9th ed.) CitationUnited States. Environmental Protection Agency. Office of Acid Deposition, Environmental Monitoring and Quality Assurance. AERP Status. U.S. Environmental Protection Agency, Office of Acid Deposition, Environmental Monitoring and Quality Assurance, 1990.