Ariyanto, Ismail Nur, Humiras Hardi Purba, and Aleksander Purba. “A Systematic Review and Analysis of Risk Assessment in Highway Construction Project ”. Operational Research in Engineering Sciences: Theory and Applications 3, no. 3 (September 24, 2020): 29–47. Accessed November 5, 2024. https://oresta.org/menu-script/index.php/oresta/article/view/61.