Mustadi, A. et al. 2023. The Development of E-Modules for Language Politeness Learning in Independent Curriculum-Based Elementary School. Jurnal Kependidikan: Jurnal Hasil Penelitian dan Kajian Kepustakaan di Bidang Pendidikan, Pengajaran dan Pembelajaran. 9, 2 (Jun. 2023), 408–420. DOI:https://doi.org/10.33394/jk.v9i2.7366.