«In Vitro Antioxidant Properties of Methanolic Leaf Extract of Vernonia Amygdalina Del» (2021) Nigerian Journal of Physiological Sciences, 29(2), pp. 091–101. Disponibile su: https://ojshostng.com/index.php/njphysiologicalsciences/article/view/1814 (Consultato: 6 aprile 2026).