H. A. Ba'Its, I. Arum Puspita, and A. F. Bay, “Combination of Program Evaluation and Review Technique (PERT) and Critical Path Method (CPM) for Project Schedule Development”, ijie, vol. 12, no. 3, pp. 68–75, Feb. 2020, Accessed: Jul. 18, 2024. [Online]. Available: https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/4207