GOPAL V V. (2005). CRM IN TRAVEL AND TOURISM: CONCEPTS AND CASES. ICFAI BOOKS.
芝加哥风格引文GOPAL V V. CRM IN TRAVEL AND TOURISM: CONCEPTS AND CASES. HYDERABAD: ICFAI BOOKS, 2005.
MLA引文GOPAL V V. CRM IN TRAVEL AND TOURISM: CONCEPTS AND CASES. ICFAI BOOKS, 2005.
警告：这些引文格式不一定是100％准确.