Dang Thi Kim Thoa, and Nguyen Thi Huyen. “Factors Affecting the Intention to Purchase Smart Travel Cards of Crystal Holidays Holdings”. VNU University of Economics and Business 4, no. 4 (August 25, 2024): 108. Accessed April 25, 2025. https://jeb.ueb.edu.vn/index.php/jeb/article/view/249.