Oladele, S.B, J.O Ayo, and A.O Adaudi. 2010. “Medicinal and Physiological Properties of Flavonoids, Coumarin Derivatives and Anthraqoinones of Plant Origin”. West African Journal of Pharmacology and Drug Research 11 (1). https://doi.org/10.4314/wajpdr.v11i1.53394.