Purnamasari, F. ., Sukartono, Rahmawati, F. P. ., Minsih, & Widyasari, C. . (2022). Social Harmony of Wonokerto Village Society as a Source of Politeness Learning for Elementary School Students. Jurnal Penelitian Dan Pengembangan Pendidikan, 6(3), 473–482. https://doi.org/10.23887/jppp.v6i3.53869