Cita APA (7th ed.)

Sutton, D. B., & Harmon, P. (1973). Ecology: Selected concepts. John Wiley.

Cita Chicago (17th ed.)

Sutton, David B., i Paul Harmon. Ecology: Selected Concepts. Nueva York: John Wiley, 1973.

Cita MLA (9th ed.)

Sutton, David B., i Paul Harmon. Ecology: Selected Concepts. John Wiley, 1973.