“FORMULASI DAN PENENTUAN NILAI SUN PROTECTION FACTOR (SPF) SEDIAAN KRIM TABIR SURYA EKSTRAK ETANOL BEKATUL PADI BERAS MERAH (Oryza Sativa L)”. Jurnal Penelitian Farmasi Indonesia 10, no. 1 (June 30, 2021): 33–38. Accessed May 6, 2024. https://ejournal.stifar-riau.ac.id/index.php/jpfi/article/view/1408.