Rahmatiyah, Rahmatiyah, Nurul Fitriani, and Agus Prasetyo. “Uji Antibakteri Ekstrak Daun Sirih Hitam (Piper Betle L. Var. Nigra) Terhadap Bakteri Propionibacterium Acnes”. Educationist: Journal of Educational and Cultural Studies 2, no. 2 (November 10, 2023): 129–132. Accessed May 16, 2025. https://jurnal.litnuspublisher.com/index.php/jecs/article/view/175.