BIN ABD RAHMAN, M. A. A., & Mohd Fahmi Bin Abdul Rahman. (2025). An Investigation into the Performance and Problems of the Elevator System at PPR Sinar Intan Residential. Progress in Engineering Application and Technology, 6(1), 200-208. https://penerbit.uthm.edu.my/periodicals/index.php/peat/article/view/19241