Marsetyo, R. I., S. P. Andyningtyas, C. S. Zamrutizahra, I. N. Fadela, A. Subiwahjudi, and I. Widjiastuti. “An Effective Concentration of Propolis Extract to Inhibit the Activity of Streptococcus Mutans Glucosyltransferase Enzyme”. Dental Journal (Majalah Kedokteran Gigi), vol. 54, no. 4, Oct. 2021, pp. 186-9, doi:10.20473/j.djmkg.v54.i4.p186-189.