Nwagu, B., P. Rekwot, B. Abubakar, O. Oni, I. Adeyinika, and U. Egbuedo. “Semen Characteristics of Rhode Island Red and White Breeder Cocks”. Nigerian Journal of Animal Production, vol. 23, no. 1, Nov. 2015, pp. 1-4, doi:10.4314/njap.v23i1.