APA استشهاد

Trivedi. P.R & Gurdeep Raj. (1992). Concepts in Environment. Akasheddp.

استشهاد بنمط شيكاغو

Trivedi. P.R و Gurdeep Raj. Concepts in Environment. New Delhi: Akasheddp, 1992.

MLA استشهاد

Trivedi. P.R و Gurdeep Raj. Concepts in Environment. Akasheddp, 1992.