Simanjuntak, Marudut Bernadtua, Muchlas Suseno, Ramdhoni Ramdhoni, Ilza Mayuni, Zuriyati Zuriyati, and Sutrisno Sutrisno. “The Value of Parents’ Image in Seven Batak Toba Songs (Literary Art Study)”. Jurnal Pendidikan Tambusai 6, no. 2 (May 7, 2022): 8540–8551. Accessed January 15, 2025. http://jptam.org/index.php/jptam/article/view/3713.