See, Koh Liew, Hamirdin Ithnin, and Mohamad Suhaily Yusri Che Ngah. “Kajian Perbandingan Antara Realiti Dengan Persepsi Mengenai Kualiti Bekalan Air Di Kelantan: Comparison Between Reality and Perception of Water Supply Quality in Kelantan”. GEOGRAFI 3, no. 1 (April 6, 2015): 35–47. Accessed May 12, 2025. https://ejournal.upsi.edu.my/index.php/GEOG/article/view/1846.