حيدر پ.ي. د. صباح صبحي حيدر, and عزيز م.ي. دلخواز اسماعيل. “Types of Performance of the Political System and Its Indicators ”. Polytechnic Journal of Humanities and Social Sciences 4, no. 2 (November 20, 2023): 626-644. Accessed July 3, 2024. https://journals.epu.edu.iq/index.php/ptjhss/article/view/1393.