Panji Pratama, Sofyan Sauri, Waska Warta, and Hendi Suhendraya Muchtar. “Management of Language Politeness Development in Improving Digital Literacy for High School Students”. International Journal of Educational Research &Amp; Social Sciences, vol. 3, no. 1, Feb. 2022, pp. 112-34, doi:10.51601/ijersc.v3i1.265.