G. A. Al-Kaisse and E. K. Khalel, “The Potency of Chamomile Flowers (Matericaria chamomilla L.) as Feed Supplements (Growth Promoters) on Productive Performance and Hematological Parameters Constituents of Broiler”, Int. J. Poult. Sci., vol. 10, no. 9, pp. 726–729, Aug. 2011, doi: 10.3923/ijps.2011.726.729.