O. Amal, A. Mukhtar, K. Mohamed, and A. Ahlam, “Use of Halfa Bar Essential Oil (HBO) as a Natural Growth Promoter in Broiler Nutrition”, Int. J. Poult. Sci., vol. 12, no. 1, pp. 15–18, Dec. 2012, doi: 10.3923/ijps.2013.15.18.