MOHAMMED, A.; اشرف. The Concept of Authority According to Caliph Al-Mutawakkil (247A.H.-861A.D.). Journal of Education for the Humanities , [S. l.], v. 3, n. 9, p. 587–608, Disponível em: https://ojs.uomosul.edu.iq/index.php/jeh/article/view/42888. Acesso em: 18 sep. 2025.