Hashim, M., M. S. Y. Che Ngah, Y. Saleh, and N. Nayan. “Pencemaran Bunyi Bising Trafik Di Kawasan Penempatan Terpilih Koridor Utara Negeri Selangor: Traffic Noise Pollution at Selected Settlements in Northern Corridor of Selangor”. GEOGRAFI, vol. 3, no. 1, Apr. 2015, pp. 48-59, https://ojs.upsi.edu.my/index.php/GEOG/article/view/1847.