M. Zolkipli, H, H Juahir, G Adiana, N Zainuddin, A B. H. M. Maliki, M E. Toriman, M Mokhtar, and R Elfitri. “Spatial Assessment of Selangor, Malaysia Water Treatment Plant Performance Using Chemometric Technique”. International Journal of Engineering and Technology 7, no. 3.14 (July 25, 2018): 139–146. Accessed May 18, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/16874.