Maulana, Azwar, et al. “Comparison of Total Phenolic Content in Water, Ethyl Acetate, and N-Hexane Fractions of Cinnamon Bark (Cinnamomum Burmannii) Ethanol Extract”. Jurnal Sains Dan Teknologi Farmasi Indonesia, vol. 14, no. 2, Dec. 2025, pp. 162-9, https://e-journal.stfi.ac.id/index.php/jstfi/article/view/120.