Παραπομπή APA

Sethi, P. (1999). Nature and scope of tourism. Rajat publications.

Παραπομπή Chicago Style

Sethi, Praveen. Nature and Scope of Tourism. Delhi: Rajat publications, 1999.

Παραπομπή MLA

Sethi, Praveen. Nature and Scope of Tourism. Rajat publications, 1999.