Ayu, D., Aulyana, R., Astuti, E. W., Kusmiyati, K., & Hidayati, N. (2019). Catalytic Transesterification of Used Cooking Oil to Biodiesel: Effect of Oil-Methanol Molar Ratio and Reaction Time. Automotive Experiences, 2(3), 73-77. https://doi.org/10.31603/ae.v2i3.2991