Marpaung, Cristofel Alfandi, Ance J. Panggabean, and Junita Batubara. “Bentuk Dan Fungsi Lagu Buku Ende N0. 435 ‘Marolopolop Tondingki’ Di Gereja HKBP Teladan Sei Mati Ressort Medan Labuhan”. Innovative: Journal Of Social Science Research 4, no. 1 (February 5, 2024): 8540–8550. Accessed July 16, 2026. https://j-innovative.org/index.php/Innovative/article/view/8848.