Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

Thorp, James H., y Alan P. Covich. Ecology and Classification of North American Freshwater Invertebrates. 2nd ed. Academic Press, 2001.