Abu Bakar, A., N. H. Hashim, and . . “Monitoring of Wastewater Quality from Laundry and Car Wash Industries at Batu Pahat, Johor”. International Journal of Engineering and Technology 7, no. 4.14 (December 24, 2019): 150–153. Accessed May 12, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/27517.