Wulandari, D., S. Al-Shidi, and T. Firuza. “Javanese Speech Levels and Language Politeness Among First-Grade Elementary Students: A Sociolinguistic Study”. Journal of Language, Literature, and Educational Research, Vol. 3, no. 1, May 2026, pp. 58-66, doi:10.37251/jolle.v3i1.3175.