Abdul Rahman Huraisen Masri. 2018. “Use of Field Data in Determining Rock Slope Stability: Case Study North – South Malaysia Highway”. Politeknik & Kolej Komuniti Journal of Engineering and Technology 3 (Special Issue). Putrajaya, Malaysia:69-80. https://app.mypolycc.edu.my/journal/index.php/PMJET/article/view/412.