Babiker, M.A.A., and E. Tawfeeg. “Role of Administration Routes of Anti - Infectious Bursal Disease Virus (Gumboro) Vaccine on Immunization of Chicken ”. International Journal of Poultry Science 7, no. 3 (February 15, 2008): 279–282. Accessed September 21, 2025. https://ijpsjournal.org/index.php/ijps/article/view/943.