محمد القيسيبشار. “Geographic Assessment of the Role of Agricultural Companies in Diversifying the Sources of Income of the Iraqi Economy (A Case Study in the District of Mahmudiya)”. Al-Adab Journal (ISSN: 1994473X) 1, no. 119 (December 23, 2018): 393-408. Accessed November 30, 2019. http://aladabj.uobaghdad.edu.iq/index.php/aladabjournal/article/view/325.