Kamal, Sefrianita, and Mesa Sukmadani Rusdi. “Utilization of Catechins in Sunscreen Lotion Formulation”. Borneo Journal of Pharmacy 1, no. 2 (November 1, 2018): 68–71. Accessed April 29, 2024. https://journal.umpr.ac.id/index.php/bjop/article/view/375.