Y.W., Oon, Law P.L., Ting S.N., and Tang F.E. “A 3-Stage Treatment System For Domestic Wastewater: Part I. Development”. Journal of Civil Engineering, Science and Technology 4, no. 1 (April 1, 2013): 13-25. Accessed April 26, 2024. https://publisher.unimas.my/ojs/index.php/JCEST/article/view/104.