MURAD, H. Q. . WAS ’UMAR II "ATRUE UMAYYAD"? . Islamic Studies, [S. l.], v. 24, n. 03, p. 325–348, 1985. Disponível em: http://irigs.iiu.edu.pk:64447/ojs/index.php/islamicstudies/article/view/5854. Acesso em: 6 dec. 2025.