Ridzuan, M.B. (2013) “Landfill Leachate Treatment Using Hybrid Up-Flow Anaerobic Sludge Blanket (HUASB) Reactor”, International Journal of Integrated Engineering, 5(1). Available at: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/773 (Accessed: 6 May 2024).