Wintariani NP, Lionita NKV. The SPF (Sun Protection Factor) Value Analysis of Gonda Plant (Sphenoclea zeylanica Gaertner) Extract Sunscreen Cream Using UV-Vis Spectrophotometry Method. JINTO [Internet]. 2023 Sep. 30 [cited 2024 May 9];9(2):90-5. Available from: https://e-journal.unmas.ac.id/index.php/Medicamento/article/view/6600