Ya’u, Jamilu, and Sani Malami. “Antidepressant Activity of Ethanol Extract and Residual Aqueous Fraction of Carissa Edulis (Apocynaceae) Root Bark in Mice: Https: doi.org 10.26538 Tjnpr V1i3.9”. Tropical Journal of Natural Product Research (TJNPR), vol. 1, no. 3, Sept. 2017, pp. 129-32, https://tjnpr.org/index.php/home/article/view/3315.