Hai Linh, V. T. (2016) “Application of Importance - Performance Analysis Model in Evaluation Service Quality of Diving Tour Operator in Nha Trang (Viet Nam)”, AU-GSB e-JOURNAL, 8(2), p. 42. Available at: http://www.assumptionjournal.au.edu/index.php/AU-GSB/article/view/2223 (Accessed: 23April2024).