CROW, K. D. Caliph and the ’Islamic State’ - Lessons of History. ICR Journal, [S. l.], v. 5, n. 4, p. 586–590, 2014. DOI: 10.52282/icr.v5i4.376. Disponível em: https://icrjournal.org/index.php/icr/article/view/376. Acesso em: 5 dec. 2021.