Wardhani, A. K., & Munawaroh , R. (2026). Antibacterial Activity of Ethanolic and Decoction Extract of Crystal Guava Leaves (Psidium guajava L. Cultivar Kristal) Against Escherichia coli and Shigella sonnei . Journal of Pharmaceutical and Sciences, 9(1), 195–203. https://doi.org/10.36490/journal-jps.com.v9i1.1253