MOHSEN, N.; نكتل. Optimal employment of human resources during the era of the caliphate. Journal of Education for the Humanities , [S. l.], v. 4, n. 16, p. 157–176, 2025. DOI: 10.33899/jeh.2024.184717. Disponível em: https://rjps.uomosul.edu.iq/index.php/jeh/article/view/6071. Acesso em: 6 aug. 2025.