Nababan, F. et al. 2025. Antibacterial Effectiveness Test of Roselle Flower (Hibiscus sabdariffa L.) Ethanol Extract Against Escherichia coli, Staphylococcus aureus, and Propionibacterium acnes Bacteria. Jurnal Biologi Tropis. 25, 1 (Mar. 2025), 1074–1083. DOI:https://doi.org/10.29303/jbt.v25i1.8765.