Al-Mashhadani , E.H., Al-Mashhadani, H. and Al-Shamire, J.S. (2013) “Effect of Supplementing Different Levels of Chamomile Oil on Broiler Performance and Some Physiological Traits”, International Journal of Poultry Science, 12(7), pp. 426–429. doi:10.3923/ijps.2013.426.429.