Zuhaira, S., Nizam, N. M., & Ridzuan, P. (2018). The Efficacy of Psidium guajava Linn Leaf Extractsfrom Selangor Region Against Gram-Positive and Gram-Negative Bacteria. Folia Medica Indonesiana, 54(4), 294–300. https://doi.org/10.20473/fmi.v54i4.10716