Cita APA (7a ed.)

Whittaker, R. H. (1975). Communities and ecosystems (2nd edition.). Macmillan.

Cita Chicago Style (17a ed.)

Whittaker, Robert H. Communities and Ecosystems. 2nd edition. New York: Macmillan, 1975.

Cita MLA (8a ed.)

Whittaker, Robert H. Communities and Ecosystems. 2nd edition. Macmillan, 1975.