Marketing measures contribute to promoting the image of Ha Long Bay - 15
11 Tran Ngoc Nam, Tran Huy Khang (2005), Tourism Marketing, Publishing House Ho Chi Minh City version. 12 Tran Nhoan (2005), Overview of tourism, University of Culture, Hanoi cradle 13 Collective authors (2000), Theoretical Marketing Textbook, Education Publishing House. 14 Travel magazine issues ...