United States. Environmental Protection Agency. Enforcement and Compliance Assurance. (1999). Providing safe drinking water in America: 1997 national public water systems compliance report and update on implementation of 1996 Safe Drinking Water Act Amendments. U.S. Environmental Protection Agency, Office of Enforcement and Compliance Assurance.
Chicago Style (17th ed.) CitationUnited States. Environmental Protection Agency. Enforcement and Compliance Assurance. Providing Safe Drinking Water in America: 1997 National Public Water Systems Compliance Report and Update on Implementation of 1996 Safe Drinking Water Act Amendments. Washington, D.C.: U.S. Environmental Protection Agency, Office of Enforcement and Compliance Assurance, 1999.
MLA (9th ed.) CitationUnited States. Environmental Protection Agency. Enforcement and Compliance Assurance. Providing Safe Drinking Water in America: 1997 National Public Water Systems Compliance Report and Update on Implementation of 1996 Safe Drinking Water Act Amendments. U.S. Environmental Protection Agency, Office of Enforcement and Compliance Assurance, 1999.