R. S. Shewita and  A. E. Taha,  Effect of Dietary Supplementation of Different Levels of Black Seed (Nigella Sativa L.) on Growth Performance, Immunological, Hematological and Carcass Parameters of Broiler Chicks.   journal   = {International Journal of Animal and Veterinary Sciences}, [online]. World Academy of Science, Engineering and Technology.
    May 2011, vol. 53(5). 304 - 310
    [viewed 27 January 2020]. Available from: https://publications.waset.org/pdf/9176.