“Concentration Effect of MgO K2O Catalyst on Transesterification of Castor Seed (Ricinus Communis) Oil: Pengaruh Konsentrasi Katalis MgO K2O Pada Transesterifikasi Minyak Biji Jarak (Ricinus Communis)”. Stannum : Jurnal Sains Dan Terapan Kimia, vol. 6, no. 2, Oct. 2024, pp. 96-103, https://doi.org/10.33019/jstk.v6i2.4692.