HAMASH KHALLF, Y. Used Language in formal and Informat setting. College of Basic Education Research Journal, [S. l.], v. 11, n. 2, p. 183–240, 2012. Disponível em: https://moss.uomosul.edu.iq/index.php/berj/article/view/39514. Acesso em: 26 oct. 2025.