“Testing the Antibacterial Activity of A Serum Preparation of Pegagan Leaf Extract (Centella Asiatica (L.) Urban) Against the Bacteria Propionibacterium Acnes”. Pratama Medika : Jurnal Kesehatan 2, no. 1 (November 24, 2023): 37–52. Accessed September 10, 2025. https://journal.citradharma.org/pratamamedika/article/view/936.