"Incidence of infectious bursal disease in chickens submitted to the Veterinary Research Institute (VRI), Khartoum-Sudan" (2022) Journal of Veterinary Medicine and Animal Production, 5(2). موجود في: https://onlinejournals.uofk.edu/vet/article/view/986 (تاريخ الوصول: 25 مايو 2026).