APA (7e ed.) Bronvermelding

Kumar, H. D. (1997). Modern concepts of ecology (8th rev. ed.). Vikas Pub. House ; UBS Publishers' Distributors.

Chicago (17e ed.) Bronvermelding

Kumar, H. D. Modern Concepts of Ecology. 8th rev. ed. New Delhi: Vikas Pub. House ; UBS Publishers' Distributors, 1997.

MLA (8e ed.) Bronvermelding

Kumar, H. D. Modern Concepts of Ecology. 8th rev. ed. Vikas Pub. House ; UBS Publishers' Distributors, 1997.