Kormondy, E. J. (1991). Concepts of ecology (3rd ed.). Prentice-Hall of India.
Cita Chicago (17th ed.)Kormondy, Edward J. Concepts of Ecology. 3rd ed. New Delhi: Prentice-Hall of India, 1991.
Cita MLA (9th ed.)Kormondy, Edward J. Concepts of Ecology. 3rd ed. Prentice-Hall of India, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.