Παραπομπή APA

Negi, J. (2008). Travel agency operations: Concepts and principles. Kaniksha.

Παραπομπή Chicago Style

Negi, Jagmohan. Travel Agency Operations: Concepts and Principles. New Delhi: Kaniksha, 2008.

Παραπομπή MLA

Negi, Jagmohan. Travel Agency Operations: Concepts and Principles. Kaniksha, 2008.