Jasrin, N. S., Siti Amira Othman, N. F. A. Nor Azman, and N. F. Abu Bakar. “Basic of Fault Tree (FT) Method”. Enhanced Knowledge in Sciences and Technology, vol. 1, no. 1, Feb. 2021, pp. 15-20, https://publisher.uthm.edu.my/periodicals/index.php/ekst/article/view/634.