Cheah, Choon Fong, and Bachik Abu Bakar. “Study of PID Controller Mode at Biodiesel Pilot Plant at UTHM ”. Progress in Engineering Application and Technology 4, no. 1 (May 25, 2023): 545–556. Accessed July 18, 2024. https://penerbit.uthm.edu.my/periodicals/index.php/peat/article/view/10249.