Saputra, A., Satwikanitya, P., Puspita, F., Sya’bani, M. W., Agustian, M. F., & Pambudi, W. (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), 335–342. retrieved from https://ph01.tci-thaijo.org/index.php/easr/article/view/251726