Phytochemical Test and Value Determination Sun Protection Factor (SPF) Ethanol Extract Waru Leaves (Hibiscus tiliaceus). Stannum : Jurnal Sains dan Terapan Kimia, [S. l.], v. 5, n. 1, p. 24–29, 2023. DOI: 10.33019/jstk.v5i1.3785. Disponível em: https://journal.ubb.ac.id/index.php/stannum/article/view/3785. Acesso em: 10 apr. 2026.