Hassan, Razali, et al. “Development of A Work-Based Vestibule Training E-Module For Accident Prevention at Malaysian Oil and Gas Drilling Industries: A Proposed Framework”. International Journal of Sustainable Construction Engineering and Technology, vol. 11, no. 2, Oct. 2020, pp. 109-17, https://penerbit.uthm.edu.my/ojs/index.php/IJSCET/article/view/6776.