Electronic Field Production Services, Bullfrog Films, & University of Massachusetts at Amherst. (1992). Troubled waters: Plastic in the marine environment. Bullfrog Films.
Chicago Style (17th ed.) CitationElectronic Field Production Services, Bullfrog Films, and University of Massachusetts at Amherst. Troubled Waters: Plastic in the Marine Environment. Oley, PA: Bullfrog Films, 1992.
MLA (8th ed.) CitationElectronic Field Production Services, et al. Troubled Waters: Plastic in the Marine Environment. Bullfrog Films, 1992.
Warning: These citations may not always be 100% accurate.