Aisyi, R., H. Hussada, V. Pama, and R. Pama. “Tracing the Islamic Journey in Barus: The Genesis of Islam’s Spread”. LANGGAM: International Journal of Social Science Education, Art and Culture, Vol. 4, no. 2, June 2025, pp. 18-26, http://langgam.ppj.unp.ac.id/index.php/jurnal/article/view/243.