APA (7th ed.) Citation

Townsend, C. R. (2003). Essentials of ecology. Sinauer Associates.

Chicago Style (17th ed.) Citation

Townsend, Colin R. Essentials of Ecology. Sunderland, MA: Sinauer Associates, 2003.

MLA (9th ed.) Citation

Townsend, Colin R. Essentials of Ecology. Sinauer Associates, 2003.