Sembiring, Sugihana, AND 		Ginting, Rosita.
" THE ROLE OF SURAT UKAT IN KARO  SINGALOR LAU KARO DISTRICT" <em>Linguistika: Buletin Ilmiah Program Magister Linguistik Universitas Udayana</em> [Online], Volume 26 Number 1 (20 June 2019)