Ibrahim, A. M., Prastiwi, D. A., & Situmeang, B. (2026). Comparison of the Antioxidant Activity of n-Hexane Extract of Gandaria Stem Bark Using DPPH and ABTS Assays. Arfak Chem: Chemistry Education Journal, 9(1), 812–819. https://doi.org/10.30862/accej.v9i1.1268