Lubis YM, Chaidir Z, Refilda R, Dharma A. Antimicrobial Activity of Persea americana Peel Extract from North Sumatera, Indonesia , against Gram Positive and Gram Negative Bacteria in Vitro. ASRJETS-Journal. 2017;38(2):247-251. Accessed September 19, 2025. https://asrjetsjournal.org/American_Scientific_Journal/article/view/3696