Rollando, Rollando, et al. “Antibacterial, Antioxidant, and Cytotoxic Flavonoid Compound from Sterculia Quadrifida Leaves: doi.org 10.26538 Tjnpr V5i11.15”. Tropical Journal of Natural Product Research (TJNPR), vol. 5, no. 11, Nov. 2021, pp. 1979-85, https://www.tjnpr.org/index.php/home/article/view/321.