APA način citiranja

Bhardwaj, N., & Brijgopal. (1979). Elements of ecology.

Čikaški stil citiranja

Bhardwaj, N., i Brijgopal. Elements of Ecology. New Delhi, Vikas Publications, 1979.

MLA način citiranja

Bhardwaj, N., i Brijgopal. Elements of Ecology. 1979.