“In Vitro Antioxidant Properties of Methanolic Leaf Extract of Vernonia Amygdalina Del” (2021) Nigerian Journal of Physiological Sciences, 29(2), पृ. 091–101. पर उपलब्ध: https://ojshostng.com/index.php/njphysiologicalsciences/article/view/1814 (अंतिम उपयोग: 27 अप्रैल 2026).