“KARAKTERISTIK DAN NILAI SUN PROTECTING FACTOR (SPF) KITOSAN DARI TULANG SOTONG (Sephia Officinalis)”. Jurnal Insan Farmasi Indonesia 3, no. 2 (December 28, 2020): 298–306. Accessed November 11, 2026. https://e-jurnal.stikes-isfi.ac.id/index.php/JIFI/article/view/539.