Elvira, Elvira, Ahmad Suradi, and Dina Putrsi Juni Astuti. 2024. “Comparative Analysis of Spoken Language Use in Formal and Non-Formal Communication: A Study of Eighth-Grade Students at MTsN 1 Mukomuko, Indonesia”. JPI : Jurnal Pustaka Indonesia 4 (2), 93-100. https://doi.org/10.62159/jpi.v4i2.1295.