Ashim Gupta. (2012). Travel agency and tour operations: Concepts and principles. Centrum Press.
Style de citation ChicagoAshim Gupta. Travel Agency and Tour Operations: Concepts and Principles. New Delhi: Centrum Press, 2012.
Style de citation MLAAshim Gupta. Travel Agency and Tour Operations: Concepts and Principles. Centrum Press, 2012.
Attention : ces citations peuvent ne pas être correctes à 100%.