AHMED, M. B.; GHAFFORI, A. A. M. Non -verbal Politeness in English Etiquette Books and Prophetic Sunnah. Journal of University of Human Development, [S. l.], v. 5, n. 3, p. 156–167, 2019. DOI: 10.21928/juhd.v5n3y2019.pp156-167. Disponível em: https://journals.uhd.edu.iq/index.php/juhd/article/view/411. Acesso em: 2 may. 2024.