Nguyen, Van Thuy, Ngoc Quy Nguyen, Nguyen Van Muoi, and Mai Huynh Cang. 2020. “Effect of Extraction Conditions on Total Polyphenol and Flavonoid Content of Sugar Apple Seeds (Annona Squamosa L.)”. Asian Journal of Chemistry 32 (7):1741-45. https://asianpubs.org/index.php/ajchem/article/view/2398.