M.F. Mohd Amin, K. Muda, M. S. M. Rasat, M.A. Salam, M.A. Mohd Amin. “Potential of Natural-Based Polymers for Particle and Humic Acid Removal from Wastewater”. International Journal of Advanced Science and Technology, Vol. 29, no. 4s, June 2020, pp. 3428-35, http://sersc.org/journals/index.php/IJAST/article/view/23484.