“THE EFFECT OF VARIATIONS IN CONCENTRATION OF CONCENTRATED SULFURIC ACID CATALYST ON THE DEGREE OF ETHYL LAURATE ESTERIFICATION RESULTS”, MSJ, vol. 6, no. 02, pp. 38–42, Dec. 2020, Accessed: Apr. 15, 2026. [Online]. Available: http://jurnal.polibara.ac.id/index.php/ojsdata/article/view/91