Lingga, OslandHerijon. “Management of Ecology-Based Tourism Resources in Tarabunga Village and Lumban Silintong, Toba Samosir Regency”. Jurnal Ilmiah Akomodasi Agung 8, no. 1 (April 16, 2021). Accessed August 20, 2025. https://journal.akpardarmaagung.ac.id/index.php/JIAA/article/view/53.