Fajar, D., Baihaqi, M., Maharani, N., & Salim, S. (2023). Synthesis of Biodiesel from Avocado Seed Oil Transesterification Method Using Beef Bone Catalyst. Walisongo Journal of Chemistry, 6(1), 54-60. doi:https://doi.org/10.21580/wjc.v6i1.15334