Mulyana, Rachmat, I Wayan Koko Suryawan, Iva Yenis Septiariva, Sapta Suhardono, Mega Mutiara Sari, Nova Ulhasanah, Nur Novilina Arifianningsih, Wisnu Prayogo, and Dwinto Martri Aji Buana. “Localising Global Standards in Toba, Indonesia Through a Tourist-Centric Perspective of UNESCO Guidelines”. Forum Geografi 38, no. 1 (March 16, 2024): 28–39. Accessed October 2, 2026. https://journals2.ums.ac.id/fg/article/view/3022.