APA (7th ed.) Citation

Townsend, C. R., Harper, J. L., & Begon, M. (2000). Essentials of ecology. Blackwell Science.

Chicago Style (17th ed.) Citation

Townsend, Colin R., John L. Harper, and Michael Begon. Essentials of Ecology. Malden: Blackwell Science, 2000.

MLA (9th ed.) Citation

Townsend, Colin R., et al. Essentials of Ecology. Blackwell Science, 2000.