Hassan, A., M.P. Abdullah, and W.M.A.W.M. Khalik. “Removal of Residual Oil from Palm Oil Refinery Factory Effluent by Chitosan and Its Derivatives”. Asian Journal of Chemistry 30, no. 1 (November 30, 2017): 76–80. Accessed July 23, 2024. https://asianpubs.org/index.php/ajchem/article/view/30_1_17.