Mako, A. A., A. O. Mosuro, B. S. Adedeji, F. O. Jemiseye, and T. Abokede. “Comparative Use of Oyster Shell and Limestone As Sources of Calcium in the Diet of Laying Chickens”. Nigerian Journal of Animal Production, vol. 44, no. 1, Dec. 2020, pp. 275-81, doi:10.51791/njap.v44i1.804.