K. L. See, H. Ithnin, and M. S. Y. 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”, GEOG, vol. 3, no. 1, pp. 35–47, Apr. 2015.