Halim, Herni. “Comparison of Road Traffic Noise Near High, Medium and Low Density Residential Areas in Nibong Tebal and Juru, Penang”. International Journal of Integrated Engineering 11, no. 2 (May 6, 2019). Accessed August 7, 2026. https://journal.uthm.edu.my/index.php/ijie/article/view/4242.