Ismail, W. R., Bakar, S. and A. Rahaman, Z. (2013) “Sediment and nutrient export by water from an agricultural catchment: An analysis of hysteresis patterns in the Upper Relau River, Penang: Eksport Sedimen dan Nutrien dari Kawasan Tadahan Pertanian: Satu Analisis Pola Histeresis di Ulu Sungai Relau, Pulau Pinang”, GEOGRAFI, 1(1), pp. 74–101. Available at: https://ojs.upsi.edu.my/index.php/GEOG/article/view/295 (Accessed: 16 April 2024).