Ester Martupa Lumbantoruan. Naposo Toga Sihombing: Menjaga Tradisi Batak di Perantauan. REPO [Internet]. 5 April 2025 [dikutip 11 November 2026];5(1). Tersedia pada: https://jurnal.globalaksarapers.com/index.php/repository/article/view/233