Nur, Amran, et al. “Antioxidant Activity Test of Langsat (Lansium Domesticum) Bark Extract With DPPH”. SAINTIFIK@: Jurnal Pendidikan MIPA, vol. 10, no. 1, Mar. 2025, pp. 59-65, doi:10.33387/saintifik.v10i1.9831.