Negi, J. (2008). Travel agency operations: Concepts and principles. Kaniksha.
Dyfyniad Arddull ChicagoNegi, Jagmohan. Travel Agency Operations: Concepts and Principles. New Delhi: Kaniksha, 2008.
Dyfyniad MLANegi, Jagmohan. Travel Agency Operations: Concepts and Principles. Kaniksha, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.