Verma, G. (2014). Fundamentals of tour operators. Anmol Publications Pvt. Ltd.
Chicagoスタイル(17版)引用形式Verma, Gopal. Fundamentals of Tour Operators. New Delhi: Anmol Publications Pvt. Ltd, 2014.
MLA(9版)引用形式Verma, Gopal. Fundamentals of Tour Operators. Anmol Publications Pvt. Ltd, 2014.
警告: この引用は必ずしも正確ではありません.