Saputra, Andri, Pani Satwikanitya, Fitria Puspita, Muh Wahyu Sya’bani, Mertza Fitra Agustian, and Wisnu Pambudi. 2023. “Synthesis of Epoxy Oil from Waste Cooking Oil (WCO) Using Acetic Acid and Amberlite Resin IR-120 As Catalyst”. Engineering and Applied Science Research 50 (4):335-42. https://ph01.tci-thaijo.org/index.php/easr/article/view/251726.