Παραπομπή σε μορφή APA (7η εκδ.)
Ackerman, B. A., & Hassler, W. T. (1981). Clean coal/dirty air: Or how the Clean Air Act became a multibillion-dollar bail-out for high-sulfur coal producers and what should be done about it. Yale University Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)
Ackerman, Bruce A., και William T. Hassler. Clean Coal/dirty Air: Or How the Clean Air Act Became a Multibillion-dollar Bail-out for High-sulfur Coal Producers and What Should Be Done About It. New Haven: Yale University Press, 1981.
Παραπομπή σε μορφή MLA (9th εκδ.)
Ackerman, Bruce A., και William T. Hassler. Clean Coal/dirty Air: Or How the Clean Air Act Became a Multibillion-dollar Bail-out for High-sulfur Coal Producers and What Should Be Done About It. Yale University Press, 1981.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.