E. Edyson, F. Murgianto, A. Ardiyanto, E. J. . Astuti, and M. P. . Ahmad, “Preprocessing Factors Affected Free Fatty Acid Content in Crude Palm Oil Quality”, J. Ilmu. Pertan. Indones., vol. 27, no. 2, pp. 177–181, Apr. 2022, doi: 10.18343/jipi.27.2.177.