Y.W., Oon, Law P.L., Ting S.N., and Tang F.E. “A 3-Stage Treatment System For Domestic Wastewater: Part II. Performance Evaluation”. Journal of Civil Engineering, Science and Technology 4, no. 1 (March 1, 2013): 26–33. Accessed November 23, 2024. https://publisher.unimas.my/ojs/index.php/JCEST/article/view/105.