Mor, Sunil K., G. Narang, N. Jindal, N.K. Mahajan, P.C. Sharma, and N.K. Rakha. 2010. “Epidemiological Studies on Infectious Bursal Disease in Broiler Chickens in Haryana, India”. International Journal of Poultry Science 9 (4): 395–400. https://doi.org/10.3923/ijps.2010.395.400.