Damian, D. C., E. I. Nweze, and C. C. Onyeke. “The in Vivo Anti-Plasmodium Activity of Garcinia Kola Heckel”. Journal of Basic Pharmacology and Toxicology, Vol. 1, no. 2, Apr. 2017, pp. 27-31, http://scigreen.com/index.php/JBPT/article/view/22.