„In Vitro Antioxidant Properties of Methanolic Leaf Extract of Vernonia Amygdalina Del” (2021) Nigerian Journal of Physiological Sciences, 29(2), o. 091–101. Elérhető: https://www.ojshostng.com/index.php/njphysiologicalsciences/article/view/1814 (Elérés: 6 április 2026).