Citazione Stile APA (7a Edizione)

Kumar, H. (1990). Modern concepts of ecology (2nd ed.). Vikas.

Citazione stile Chigago Style (17a edizione)

Kumar, H.D. Modern Concepts of Ecology. 2nd ed. New Delhi: Vikas, 1990.

Citatione MLA (9a ed.)

Kumar, H.D. Modern Concepts of Ecology. 2nd ed. Vikas, 1990.