PRATIWI, P.; RIZKI, N. P.; ELISMA, E.; MAHARINI, I. Comparison of Antioxidant Activity of Crude Extract And Gel Preparation From Alstonia Scholaris L. Leaf Extract. SANITAS: Jurnal Teknologi dan Seni Kesehatan, v. 14, n. 2, p. 95-105, 31 dez. 2023.