Muliani, Mertiza Fitri, Ngusman Abdul Manaf, and Tressyalina Tressyalina. 2026. “Language Politeness in Indonesian Language Learning in Elementary Schools”. Perspektif Pendidikan Dan Keguruan 17 (1). Pekanbaru, Riau, Indonesia:90-103. https://doi.org/10.25299/perspektif.2026.vol17(1).25942.