Tion, M. A., and P. C. Njoku. “The Effects of Limestone Sources As Calcium Source on the Performance and Eggshell Quality of Laying Chickens”. Nigerian Journal of Animal Production 36, no. 2 (December 29, 2020): 256–263. Accessed July 22, 2026. https://njap.org.ng/index.php/njap/article/view/1371.