Παραπομπή APA

Sharma Sashi Pushpa. (2006). Tourism and environment/1e. Kanishka.

Παραπομπή Chicago Style

Sharma Sashi Pushpa. Tourism and Environment/1e. New Delhi: Kanishka, 2006.

Παραπομπή MLA

Sharma Sashi Pushpa. Tourism and Environment/1e. Kanishka, 2006.