Hamzah, M.F., Alimon, H. and Yusof, N. 2019. Phytoremediation of Palm Oil Mill Final Discharge Wastewater using Aquatic Macrophytes Leersia oryzoides, Pistia stratoites and Ludwigia peploides. Journal of Science and Mathematics Letters. 4, 1 (Jan. 2019), 23–31.