Sianturi, Sister, Gesha Desy Alisha, dan Febry Rahmadhani Hasibuan. 2026. “Waste to Energy: Utilization of Eggshell Catalysts in the Production of Waste Cooking Oil-Based Biodiesel”. Akta Kimia Indonesia 11 (1):41-52. https://doi.org/10.12962/j25493736.v11i1.9633.