Ardiyana, R. I. ., N. E. K. . Putri, and F. . Prasetya. “Formulasi Sediaan Patch Bukal Ekstrak Daun Sirih Hitam (Piper Betle L. Var Nigra ): Buccal Patch Preparation Formulation of Black Betel Leaf Extract (Piper Betle L. Var Nigra)”. Proceeding of Mulawarman Pharmaceuticals Conferences, vol. 13, no. 1, Apr. 2021, pp. 171-4, doi:10.25026/mpc.v13i1.462.