Fadzilah, Mariatul, et al. “PROFILING ANAEROBIC DIGESTION STAGES FROM CAFETERIA FOOD WASTE FOR PRODUCTION OF BIOGAS ”. IIUM Engineering Congress Proceedings, vol. 1, no. 1, Oct. 2023, pp. 57-63, https://journals.iium.edu.my/ejournal/index.php/proc/article/view/3007.