„In Vitro Antioxidant Properties of Methanolic Leaf Extract of Vernonia Amygdalina Del" (2021) Nigerian Journal of Physiological Sciences, 29(2), s. 091–101. Dostupné z: https://ojshostng.com/index.php/njphysiologicalsciences/article/view/1814 (Viděno: 6 duben 2026).