Babiker, M.A.A., I.E. Yahia, K. Noura, and M.E. Manal. “Evaluation of Four Commercial Anti - Infectious Bursal Disease (IBD) Vaccines under Sudan Conditions”. International Journal of Poultry Science 7, no. 6 (May 15, 2008): 570–573. Accessed September 21, 2025. https://ijpsjournal.org/index.php/ijps/article/view/995.