Chandrika, Anggi, Muhammad Yerizam, and Anerasari Meidinariasty. “Effect of Alkaline Catalyst Concentrations and Weight Ratios of Oil to Methanol on the Biodiesel Production From Waste Cooking Oil”. Indonesian Journal of Chemical Science 12, no. 3 (November 13, 2023): 245-254. Accessed November 23, 2024. http://journal.unnes.ac.id/sju/ijcs/article/view/72542.