KHAN, S. S. Iqbal Syed Hussain. The Decline of the Muslim Ummah. Islamic Studies, [S. l.], v. 47, n. 4, p. 564–566, 2008. DOI: 10.52541/isiri.v47i4.4285. Disponível em: http://irigs.iiu.edu.pk:64447/ojs/index.php/islamicstudies/article/view/4285. Acesso em: 16 dec. 2025.