Mohsen, Naktal, and نكتل. “Optimal Employment of Human Resources During the Era of the Caliphate”. Journal of Education for the Humanities 4, no. 16 (June 24, 2025): 157–176. Accessed August 6, 2025. https://rjps.uomosul.edu.iq/index.php/jeh/article/view/6071.