Marulitua, Oktavia Marpaung, and Albert Yansen. “MANAJEMENT OF BORDERLAND AREA”. Juremi: Jurnal Riset Ekonomi 1, no. 1 (July 14, 2021): 35–43. Accessed July 6, 2025. https://mail.bajangjournal.com/index.php/Juremi/article/view/277.