Okeke, E. N. ., and G. Lang. “The Application of the Immunoperoxidase (IP) Antibody Technique for the Etiological Diagnosis of Infectious Bursal Disease (IBD) in Chickens”. Nigerian Journal of Animal Production, vol. 8, no. 1, Jan. 2021, pp. 36-49, doi:10.51791/njap.v8i1.2048.