Hafiz, Mohamad Nazrul, Maidiana Othman, Noor Afiza Mat Razali, Zuliziana Suif, and Nordila Ahmad. 2023. “LABORATORY INVESTIGATION ON WATER QUALITY OF SPRING WATER FOR SMALL COMMUNITY AND WATER SECURITY”. GEOMATE Journal 24 (105):77-84. https://geomatejournal.com/geomate/article/view/3871.