Cita APA (7th ed.)

Kormondy, E. J. (2006). Concepts of ecology (4thed.). Printice Hall.

Cita Chicago (17th ed.)

Kormondy, Edward J. Concepts of Ecology. 4thed. New Delhi: Printice Hall, 2006.

Cita MLA (9th ed.)

Kormondy, Edward J. Concepts of Ecology. 4thed. Printice Hall, 2006.