Suhelmiah, M. Pomeistia, L. B. H. Rahayu, and S. Rahayu, “Antioxidant Activity Evaluation of Polar, Semi-Polar, and Non-Polar Fractions of Custard Apple (Annona Squamosa L.) Leaf Extract Using the DPPH Method”, thrive, vol. 3, no. 1, pp. 31–40, Mar. 2026.