RENU YASHWINI BASKARAN, Roslinda Ali, and Sumaiya Mashori. “Community-Based Waste Cooking Oil (WCO) Soap-Making for Environmental Awareness and Economic Stability in Labis, Johor”. Progress in Engineering Application and Technology 7, no. 1 (May 19, 2026): 46–54. Accessed July 23, 2026. https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/22877.