Widyastuti, Widyastuti, et al. “Antioxidant and Sunscreen Activities of Ethanol Extract of Strawberry Leaves (Fragaria X Ananassa A.N. Duchesne)”. Jurnal Sains Farmasi & Klinis, vol. 3, no. 1, Dec. 2016, pp. 19-24, doi:10.29208/jsfk.2016.3.1.92.