Akinniyi, Jane N. “Synthesis and Characterization of Copper Nanoparticles Using Allium Cepa (L.) Outer Peel at Ambient Temperature”. Tropical Journal of Natural Product Research (TJNPR) 9, no. 3 (March 28, 2025): 1144 – 1149. Accessed April 28, 2025. https://tjnpr.org/index.php/home/article/view/6047.