“Biodiesel Production from Waste Cooking Oil via Interesterification Reaction: Effects of Cajuput Oil Biocatalyst Concentration and Reaction Time”. G-Tech: Jurnal Teknologi Terapan 10, no. 1 (January 20, 2026): 454–464. Accessed October 8, 2026. https://ejournal.uniramalang.ac.id/g-tech/article/view/9011.