Al Aqil , Abdulaziz A. “Effects of Adding Different Dietary Levels of Garlic (Allium Sativum) Powder on Productive Performance and Egg Quality of Laying Hens”. International Journal of Poultry Science, vol. 15, no. 4, Mar. 2016, pp. 151–155, https://doi.org/10.3923/ijps.2016.151.155.