Salih, Raad. “Middle East Engines Security for the Period 1979-2018”. Cihan University-Erbil Journal of Humanities and Social Sciences 3, no. 2 (December 10, 2019): 119-136. Accessed April 26, 2024. https://journals.cihanuniversity.edu.iq/index.php/cuejhss/article/view/152.