APA (7th ed.) Citation

Erwin, T. L., & Pearson, D. L. (2007). A treatise on the Western Hemisphere Caraboidea (Coleoptera): Their classification, distributions, and ways of life. Pensoft.

Chicago Style (17th ed.) Citation

Erwin, Terry L., and David L. Pearson. A Treatise on the Western Hemisphere Caraboidea (Coleoptera): Their Classification, Distributions, and Ways of Life. Sofia, Bulgaria: Pensoft, 2007.

MLA (9th ed.) Citation

Erwin, Terry L., and David L. Pearson. A Treatise on the Western Hemisphere Caraboidea (Coleoptera): Their Classification, Distributions, and Ways of Life. Pensoft, 2007.