شكري عبد الله ن. The effective elements on the commercial structure of Duhok city. College of Basic Education Research Journal, [S. l.], v. 7, n. 2, p. 245–276, 2008. Disponível em: https://jeh.uomosul.edu.iq/index.php/berj/article/view/37885. Acesso em: 27 oct. 2025.