Madyaningtyas, R. S., & Rokhman, F. (2018). Administrative Staffs’ Language Politeness During Academic Service Activities at Universitas Negeri Semarang. Seloka: Jurnal Pendidikan Bahasa Dan Sastra Indonesia, 7(2), 205–212. https://doi.org/10.15294/seloka.v7i2.26591