Ab Ghani, A. F., A. Ahmad, N. S. Muhammad, R. Mat Dan, and R. Jenal. “Maintenance and Physical Asset Management Issues in Project Commissioning”. Malaysian Journal of Applied Sciences, Vol. 2, no. 2, Dec. 2017, pp. 10-28, https://journal.unisza.edu.my/myjas/index.php/myjas/article/view/84.