SHAUKAT, K. Mohammad Ilyas. The Quest For A Unified Islamic Calendar: Twenty Five Years of Progress. Islamic Studies, [S. l.], v. 46, n. 1, p. 136–137, 2007. DOI: 10.52541/isiri.v46i1.4300. Disponível em: http://irigs.iiu.edu.pk:64447/ojs/index.php/islamicstudies/article/view/4300. Acesso em: 9 dec. 2025.