Mohamad Nor, Nur Atiqah. “Comparison of Road Traffic Noise at Residential Areas in Klang Valley, Selangor and Nibong Tebal, Penang”. International Journal of Integrated Engineering 11, no. 1 (May 5, 2019). Accessed April 8, 2026. https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/4286.