APA (7th ed.) Citation

TOWNSEND, Begon, & Harper. (2003). Essentials of ecology (2nd ed.). Blackwell Pub..

Chicago Style (17th ed.) Citation

TOWNSEND, Begon, and Harper. Essentials of Ecology. 2nd ed. Oxford, UK: Blackwell Pub., 2003.

MLA (9th ed.) Citation

TOWNSEND, et al. Essentials of Ecology. 2nd ed. Blackwell Pub., 2003.