“Formulation Sunscreen Emulgel of Sweet Potatoes Leaves Extract (Ipomoea batatas (L.)) Antin-3 Variety: Formulasi Emulgel Tabir Surya Ekstrak Daun Ubi Jalar Ungu (Ipomoea batatas (L.)) Varietas Antin-3” (2020) Journal Pharmasci (Journal of Pharmacy and Science), 5(2), pp. 49–54. doi:10.53342/pharmasci.v5i2.174.