Evan, Muhammad, et al. “Secondary Metabolites from The Active Antioxidant Fraction of The Stem Bark of Syzygium Zeylanicum. L. DC”. Tropical Journal of Natural Product Research (TJNPR), vol. 9, no. 3, Mar. 2025, pp. 1074-9, https://doi.org/10.26538/tjnpr/v9i3.23.