Djayasinga, R., Setiawan, A., Purnomo, A., Amien, A. Z., & Hartanti, H. (2022). Utilization of Breed Chicken Eggshells for Biodiesel Preparation from Waste Cooking Oil. Journal of Multidisciplinary Applied Natural Science, 2(1), 41–46. https://doi.org/10.47352/jmans.2774-3047.90