Nordin, Mohamad Asraf, Norasyikin Mohmad Nor, Nuranisa Roslan, and Norhayati Ngadiman. 2022. “Study on Water Quality Parameters of UTHM Campus Pagoh Drainage Water : COD, PH and Turbidity”. Multidisciplinary Applied Research and Innovation 3 (2): 192-204. https://penerbit.uthm.edu.my/periodicals/index.php/mari/article/view/4251.