.Townsend, C. R., Begon, M., .Townsend, C. R., & .Harper, J. L. (2008). Essentials of ecology (2rd ed.). Blackwell Pub.
Citazione stile Chigago Style (17a edizione).Townsend, Colin R., Michael Begon, Colin R. .Townsend, e John L. .Harper. Essentials of Ecology. 2rd ed. Malden, MA: Blackwell Pub, 2008.
Citatione MLA (9a ed.).Townsend, Colin R., et al. Essentials of Ecology. 2rd ed. Blackwell Pub, 2008.