Simanjuntak, Menara, and Haryadi Sarjono. “Analysis, Reconstruction and Establishment Tourist Destination in Toba Samosir, North Sumatera, Indonesia”. Journal The Winners 13, no. 2 (September 28, 2012): 127–134. Accessed May 10, 2025. https://journal.binus.ac.id/index.php/winners/article/view/658.