Rohmatin, Iza Alfi, and Suparno Suparno. 2023. “Effect of Cocoa Bean Extract Concentration on the Diameter of the Clear Zone Preparing Streptococcus Mutans Bacteria”. Jurnal Penelitian Pendidikan IPA 9 (SpecialIssue):1277-83. https://doi.org/10.29303/jppipa.v9iSpecialIssue.4703.