INDAH, Della Rency Melia; KASMANTONI, Kasmantoni; BUSTOMI, Bustomi. Implementation of Language Politness Principles in Indonesian Language Learning Discussion Activities. Jadila: Journal of Development and Innovation in Language and Literature Education, [S. l.], v. 2, n. 4, p. 392–405, 2022. DOI: 10.52690/jadila.v2i4.227. Disponível em: https://jadila.yayasancec.or.id/index.php/jadila/article/view/227. Acesso em: 8 oct. 2026.