Oladele, S.B, J.O Ayo, and A.O Adaudi. “Medicinal and Physiological Properties of Flavonoids, Coumarin Derivatives and Anthraqoinones of Plant Origin”. West African Journal of Pharmacology and Drug Research 11, no. 1 (April 6, 2010). Accessed September 5, 2026. https://www.ajol.info/index.php/wajpdr/article/view/53394.