Harahap, Mulki Alfarizi, and Icol Dianto. “The Siriaon and Siluluton Traditional Ceremonies in Tapanuli Culture: Between Local Tradition and Islamic Sharia Principles”. International Journal of Global Sustainable Research, vol. 4, no. 4, May 2026, pp. 359-78, doi:10.59890/ijgsr.v4i4.212.