Negi, J. (1998). Travel agency and tour operation: Concepts and principles. Kanishka.
Chicago Edition CitationNegi, Jagmohan. Travel Agency and Tour Operation: Concepts and Principles. New Delhi: Kanishka, 1998.
MLA Edition CitationNegi, Jagmohan. Travel Agency and Tour Operation: Concepts and Principles. Kanishka, 1998.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.