Ishak, S. A. “Combination of Iron Chloride and Polyacrylamide As Coagulant-Flocculants to Remove Pollutants in Dye Wastewater”. International Journal of Integrated Engineering, Vol. 11, no. 2, May 2019, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/4241.