الوهاب خضر الياس ع. (2010). Salaries payment system of AbbasidCaliphate Army in Iraq(A.H. 552-656 / A.D. 1157-1258). College of Basic Education Research Journal, 9(1), 238–266. https://doi.org/10.33899/berj.2010.Vol9.Iss1.38775