Nasution, A., Wardaniati, I. and Lestari, S. (2022) “Antibacterial Activity of Edible Film with the Addition of Betel Leaf Extract (Piper betle) againts Streptococcus mutans”, JPK : Jurnal Proteksi Kesehatan, 11(1), pp. 12-16. doi: 10.36929/jpk.v11i1.465.