Saragih, Jawanri Maurisco, Agus Purwoko, and Zulkufli Lubis. “Institutional Feasibility Analysis in the Development of Simarjarunjung Ecotourism”. Tunas Geografi 11, no. 2 (December 23, 2022): 121–129. Accessed April 26, 2025. https://jurnal.unimed.ac.id/2012/index.php/tgeo/article/view/39228.