زياد سمير زكي الدباغ م. A Study in the Swiss Political Regime. College of Basic Education Research Journal, [S. l.], v. 11, n. 1, p. 567–582, 2012. Disponível em: https://jeh.uomosul.edu.iq/index.php/berj/article/view/38273. Acesso em: 27 oct. 2025.