Makmur, E., Hunnazah, M. and Harahap, I. 2021. Antibacterial Activity of Ethanol Extract of Kale Leaves (Brassica oleracea var. sabellica) against Escherichia coli and Staphylococcus aureus. Photon: Jurnal Sain dan Kesehatan. 12, 1 (Nov. 2021), 67-77. DOI:https://doi.org/10.37859/jp.v12i1.3347.