GHAFFORI, A. A. The Impact of COVID 19 on Non-verbal Politeness. JOURNAL OF LANGUAGE STUDIES, [S. l.], v. 5, n. 4, 1, p. 106–119, 2022. DOI: 10.25130/jls.5.4.1.9. Disponível em: http://jls.tu.edu.iq/index.php/jls/article/view/417. Acesso em: 17 oct. 2025.