V. H. A. Enemor, A. N. C. Okaka, C. S. Okafor, and S. Opeyemi, “Free Radical Scavenging Potential of Sarcocephalus latifolius (African peach) Leaf and Screening for Possible Contamination with Some Heavy Metals ”, The Bioscientist, vol. 1, no. 2, pp. 158-163, Aug. 2013.