H. Halim, “Comparison of Road Traffic Noise near High, Medium and Low Density Residential Areas in Nibong Tebal and Juru, Penang”, IJIE, vol. 11, no. 2, May 2019, Accessed: Apr. 07, 2026. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/4242