APA (7th ed.) Citation

ProQuest (Firm), Thorp, J. H., & Covich, A. P. (2001). Ecology and classification of North American freshwater invertebrates (2nd ed.). Academic Press.

Chicago Style (17th ed.) Citation

ProQuest (Firm), James H. Thorp, and Alan P. Covich. Ecology and Classification of North American Freshwater Invertebrates. 2nd ed. San Diego: Academic Press, 2001.

MLA (9th ed.) Citation

ProQuest (Firm), et al. Ecology and Classification of North American Freshwater Invertebrates. 2nd ed. Academic Press, 2001.