APA-referens

Ashim Gupta. (2012). Travel agency and tour operations: Concepts and principles. Centrum Press.

Chicago-stil citat

Ashim Gupta. Travel Agency and Tour Operations: Concepts and Principles. New Delhi: Centrum Press, 2012.

MLA-referens

Ashim Gupta. Travel Agency and Tour Operations: Concepts and Principles. Centrum Press, 2012.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.