Sari Hasibuan, N. ., N. . Afifah, E. . Marlina Harahap, D. . Andriany, K. ., and R. . Agustini. “Preservation of The People’s Story Of Mandailing Natal As a Learning Source for Developing Character Values of Students”. KnE Social Sciences, vol. 8, no. 4, Mar. 2023, pp. 319–327, doi:10.18502/kss.v8i4.12913.