Dyfyniad APA

Haskell, E. H. (1982). The politics of clean air: EPA standards for coal-burning power plants. Praeger.

Dyfyniad Arddull Chicago

Haskell, Elizabeth H. The Politics of Clean Air: EPA Standards for Coal-burning Power Plants. New York, N.Y: Praeger, 1982.

Dyfyniad MLA

Haskell, Elizabeth H. The Politics of Clean Air: EPA Standards for Coal-burning Power Plants. Praeger, 1982.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.