United States. Environmental Protection Agency. Library Systems Branch. (1977). Environmental information resources for state and local elected officials: General reference guide. Environmental Protection Agency, Office of Regional Intergovernmental Operations, Library Systems Branch.
Chicago Style (17th ed.) CitationUnited States. Environmental Protection Agency. Library Systems Branch. Environmental Information Resources for State and Local Elected Officials: General Reference Guide. [Washington]: Environmental Protection Agency, Office of Regional Intergovernmental Operations, Library Systems Branch, 1977.
MLA (9th ed.) CitationUnited States. Environmental Protection Agency. Library Systems Branch. Environmental Information Resources for State and Local Elected Officials: General Reference Guide. Environmental Protection Agency, Office of Regional Intergovernmental Operations, Library Systems Branch, 1977.