Wou Onn, Choo, Yuli Panca Asmara, Shawkat Ali Allybocus, Adnan Orakzai, Muhammad Izzat Nor Ma’arof, and Girma Tadesse Chala. 2020. “Selection of Pipeline Investigation Robot via Pugh Method”. INTI Journal 2020 (November). https://iuojs.intimal.edu.my/index.php/intijournal/article/view/222.