Haskell, E. H. (1982). The politics of clean air: EPA standards for coal-burning power plants. Praeger.
Lua i Stíl Chicago (17ú heag.)Haskell, Elizabeth H. The Politics of Clean Air: EPA Standards for Coal-burning Power Plants. New York, N.Y: Praeger, 1982.
Lua MLA (9ú heag.)Haskell, Elizabeth H. The Politics of Clean Air: EPA Standards for Coal-burning Power Plants. Praeger, 1982.
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