Fakhry Perdana Koara. “The Role of Community in Sustainable Tourism. Case Study: Girsang Simpangan Bolon”. International Journal of Architecture and Urbanism 5, no. 1 (March 31, 2021): 58–71. Accessed August 4, 2025. https://idjpcr.usu.ac.id/ijau/article/view/6032.