Awang, H., Y. Y. Tan, and M. H. Mohd Isa. “Thermal Performance and Energy Efficiency of Different Types of Walls for Residential Building”. International Journal of Sustainable Construction Engineering and Technology, vol. 13, no. 1, May 2022, pp. 218-31, https://penerbit.uthm.edu.my/ojs/index.php/IJSCET/article/view/10941.