Muhamad Hazriq Bin Hamzah and Nor Aira Binti Zambri (2024) “Portable Water Cooler using Solar System”, Progress in Engineering Application and Technology, 5(2), pp. 196–203. Available at: https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/17328 (Accessed: 7 April 2026).