N. Kholilah, L. Masyithah, and D. Suzana, “Formulation and Evaluation of Sunscreen Body Butter Preparation Containing Soursop Leaf Extract (Annona muricata L.) and Its Influence on Sun Protection Factor (SPF) Value”, J Sains Farm Klin, vol. 12, no. 2, pp. 102–110, Nov. 2025.