Abbas, G., S. H. Khan, M. Hassan, S. Mahmood, S. Naz, and S. S. Gilani. “Incidence of Poultry Diseases in Different Seasons in Khushab District, Pakistan”. Journal of Advanced Veterinary and Animal Research, vol. 2, no. 2, May 2015, pp. 141-5, https://banglajol.info/index.php/JAVAR/article/view/23206.