@article{art3884,
  title = {Oral Literature of the Batak Society \"Si Jonaha\" and its Implications in Teaching Materials for Students of SMP Negeri 4 Satu Atap Pulau Rakyat Academic Year 2022-2023},
  doi = {10.18535/ijsshi/v10i03.04},
  url = {https://valleyinternational.net/index.php/ijecs/article/view/3884}
}