Usunobun, Usunomena, and Okolie Ngozi. “Phytochemical Analysis and Proximate Composition of Vernonia Amygdalina”. International Journal of Scientific World 4, no. 1 (March 8, 2016): 11–14. Accessed December 22, 2024. https://sciencepubco.com/index.php/IJSW/article/view/5845.