Madyaningtyas, R. S., and F. Rokhman. “Administrative Staffs’ Language Politeness During Academic Service Activities at Universitas Negeri Semarang”. Seloka: Jurnal Pendidikan Bahasa Dan Sastra Indonesia, Vol. 7, no. 2, Oct. 2018, p. 205–212, doi:10.15294/seloka.v7i2.26591.