Nailul Mukafiah (2022) “Study of Antibacterial Activity of Green Betel Leaf (Piper betle L.) and Red Betel Leaf (Piper Crocatum L.) Extract Against Pseudomonas Aeruginosa Bacteria”, Farmasains : Jurnal Farmasi dan Ilmu Kesehatan, 7(1). doi: 10.22219/farmasains.v7i1.17379.