APA استشهاد

Chawla, R. (2006). Ecology and tourism development. Sumit enterprises.

استشهاد بنمط شيكاغو

Chawla, Ramesh. Ecology and Tourism Development. New Delhi: Sumit enterprises, 2006.

MLA استشهاد

Chawla, Ramesh. Ecology and Tourism Development. Sumit enterprises, 2006.