Oyejide, A., Tewe, O. and Owoade, A. (1985) “The effects of different sources of commercial rations on the humoral immune response of broilers to Newcastle disease vaccination”, Revue d’élevage et de médecine vétérinaire des pays tropicaux. Montpellier, France, 38(4), pp. 443–447. doi: 10.19182/remvt.8499.