Nlemadim, A. B., J. O. Jacob, A. I. Ajai, and M. K. A. Adeboye. “Effects of Cadmium, Copper and Zinc Interactions in Soil on Their Phytoavailability in Pumpkin (Cucurbita Moschata)”. Journal of Chemical Society of Nigeria 44, no. 6 (November 4, 2019). Accessed November 6, 2025. http://journals.chemsociety.org.ng/index.php/jcsn/article/view/370.