Cita APA

Begon, M., Harper, J. L., & Townsend, C. R. (2007). Essentials of Ecology.

Chicago Edition Citation

Begon, Michael, John L. Harper, i Colin R. Townsend. Essentials of Ecology. London, Blackwell science, 2007.

Cita MLA

Begon, Michael, et al. Essentials of Ecology. 2007.