Amos-Tautua, Bamidele Martin W, and Onigbinde Adebayo O. “Estimation of Iron, Copper and Zinc in Some Vegetables Commonly Consumed in Amassoma, Niger Delta, Nigeria”. Pakistan Journal of Nutrition 13, no. 12 (November 15, 2014): 742–745. Accessed August 24, 2025. https://pjnonline.org/pjn/article/view/2076.