Olivia Njoku, Ugochi. “Toxicological Evaluation of Methanol Leaf Extract of Cola Hispida: doi.org 10.26538 Tjnpr V5i10.25”. Tropical Journal of Natural Product Research (TJNPR), vol. 5, no. 10, Oct. 2021, pp. 1859-62, https://tjnpr.org/index.php/home/article/view/390.