Ahmad, M.S., A.H. Ariffin, and M.S. Fathi. “STAMP-Based Analysis on the Safety Management System of Bus Operators”. Journal of the Society of Automotive Engineers Malaysia 3, no. 4 (April 29, 2021): 76–84. Accessed January 6, 2025. https://jsaem.my/index.php/journal/article/view/142.