Moura, L., V. Vakharia, M. Liu, and H. Song. “In Ovo Vaccine Against Infectious Bursal Disease”. International Journal of Poultry Science 6, no. 11 (October 15, 2007): 770–775. Accessed September 21, 2025. https://ijpsjournal.org/index.php/ijps/article/view/850.