Girsang, M., & Sembiring, M. (2018). The Implementation of Culture and Literature Through Mambere Tungkot in Simalungun Batak and Mere Ciken in Karo Batak: The Local Wisdom Maintenance. KnE Social Sciences, 3(4), 512–523. https://doi.org/10.18502/kss.v3i4.1961