Putri Mentari, and Ahmad Kodri Fauzi Hasibuan. “Sustainable Tourism Management Through Community Ecotourism in Tangkahan North Sumatra”. Outline Journal of Economic Studies 5, no. 1 (December 27, 2025): 81–85. Accessed March 31, 2026. https://journal.outlinepublisher.com/index.php/OJES/article/view/585.