Ong , X.-P., T.-T. Ngo, and V.-H. La. “Optimization of Extraction of Flavonoid and Polyphenol from Camellia Megasepala Leaves and Their Anticancer Activity”. HPU2 Journal of Science: Natural Sciences and Technology, vol. 4, no. 01, Apr. 2025, pp. 12-19, doi:10.56764/hpu2.jos.2025.4.01.12-19.