Παραπομπή APA

Pruthi, R. (2006). Nature based tourism. Rajat publications.

Παραπομπή Chicago Style

Pruthi, R.K. Nature Based Tourism. New Delhi: Rajat publications, 2006.

Παραπομπή MLA

Pruthi, R.K. Nature Based Tourism. Rajat publications, 2006.