NASUTION, Mutia Maulidina Anzani; LUBIS, Safrida. POLITENESS STRATEGIES OF REQUESTS USED IN MANGUPA MANDAILING WEDDING CEREMONY. TRANSFORM : Journal of English Language Teaching and Learning, North Sumatera, Indonesia, v. 8, n. 3, 2019. DOI: 10.24114/tj.v8i3.29545. Disponível em: https://jurnal.unimed.ac.id/2012/index.php/jelt/article/view/29545. Acesso em: 4 jul. 2025.