O'Hara, K., Iudicello, S., & Bierce, R. (1989). A citizens guide to plastics in the ocean: More than a litter problem (2nd ed.). Center for Marine Conservation.
Chicago Style (17th ed.) CitationO'Hara, Kathryn, Suzanne Iudicello, and Rose Bierce. A Citizens Guide to Plastics in the Ocean: More than a Litter Problem. 2nd ed. Washington, D.C.: Center for Marine Conservation, 1989.
MLA (9th ed.) CitationO'Hara, Kathryn, et al. A Citizens Guide to Plastics in the Ocean: More than a Litter Problem. 2nd ed. Center for Marine Conservation, 1989.
Warning: These citations may not always be 100% accurate.