Kurang, Rosalina Y. “Zone of Inhibition of Ethanol and Ethyl Acetate Extracts of Forest Betel Leaves Against Escherichia Coli”. Jurnal Penelitian Pendidikan IPA 9, no. 1 (January 31, 2023): 154–159. Accessed May 7, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/2660.