ALEXANDER, D. The black flag of the ͑Abbasids. Gladius, [S. l.], v. 20, p. 221–238, 2000. DOI: 10.3989/gladius.2000.71. Disponível em: https://gladius.revistas.csic.es/index.php/gladius/article/view/71. Acesso em: 26 abr. 2024.