United States. Environmental Protection Agency. Communications, E. (1991). Earth notes. U.S. Environmental Protection Agency, Communications, Education and Public Affairs.
Chicago Style (17th ed.) CitationUnited States. Environmental Protection Agency. Communications, Education. Earth Notes. Washington, DC: U.S. Environmental Protection Agency, Communications, Education and Public Affairs, 1991.
MLA (8th ed.) CitationUnited States. Environmental Protection Agency. Communications, Education. Earth Notes. U.S. Environmental Protection Agency, Communications, Education and Public Affairs, 1991.
Warning: These citations may not always be 100% accurate.