Films for the Humanities & Sciences (Firm), Infobase., & Green Planet Films. (2014). Heavy Metal: An American Pollution Story. Infobase.
Chicago Style (17th ed.) CitationFilms for the Humanities & Sciences (Firm), Infobase, and Green Planet Films. Heavy Metal: An American Pollution Story. New York, N.Y.: Infobase, 2014.
MLA (8th ed.) CitationFilms for the Humanities & Sciences (Firm), et al. Heavy Metal: An American Pollution Story. Infobase, 2014.
Warning: These citations may not always be 100% accurate.