Dang Thi Kim Thoa, and Nguyen Thi Huyen. “Factors Affecting the Intention to Purchase Smart Travel Cards of Crystal Holidays Joint Stock Company”. VNU University of Economics and Business 4, no. 4 (August 25, 2024): 108. Accessed October 12, 2024. https://jeb.ueb.edu.vn/index.php/jeb/article/view/249.