APA (7th ed.) Citation

Townsend, C. R., Begon, M., & Harper, J. L. (2008). Essentials of ecology (3rd ed.). Blackwell Pub.

Chicago Style (17th ed.) Citation

Townsend, Colin R., Michael Begon, and John L. Harper. Essentials of Ecology. 3rd ed. Malden, Mass: Blackwell Pub, 2008.

MLA (9th ed.) Citation

Townsend, Colin R., et al. Essentials of Ecology. 3rd ed. Blackwell Pub, 2008.