Najib, Huthail, and Suliaman A. Al-Khateeb. 2004. “The Effect of Incorporating Different Levels of Locally Produced Canola Seeds (Brassica Napus, L.) In the Diet of Laying Hen”. International Journal of Poultry Science 3 (7): 490–496. https://doi.org/10.3923/ijps.2004.490.496.