APA استشهاد

Chawla, R. (2006). Ecology and Tourism development/1e. Sumit Enterprise.

استشهاد بنمط شيكاغو

Chawla, Ramesh. Ecology and Tourism Development/1e. New Delhi: Sumit Enterprise, 2006.

MLA استشهاد

Chawla, Ramesh. Ecology and Tourism Development/1e. Sumit Enterprise, 2006.