Djayasinga, Rodhiansyah, Andi Setiawan, Agus Purnomo, Ardian Zakaria Amien, and Hartanti Hartanti. “Utilization of Breed Chicken Eggshells for Biodiesel Preparation from Waste Cooking Oil”. Journal of Multidisciplinary Applied Natural Science 2, no. 1 (January 16, 2022): 41–46. Accessed March 10, 2026. https://pandawainstitute.com/journal/index.php/jmans/article/view/90.