Ogbiko, Cyril, et al. “Anti-Ulcer Activity of Methanol Extract of Plantago Rugelii Decne. (Plantaginaceae)”. Tropical Journal of Natural Product Research (TJNPR), vol. 1, no. 2, Aug. 2017, pp. 84-88, https://tjnpr.org/index.php/home/article/view/292.