Saragih, Megasari Gusandra, Elfitra Desy Surya, and Mesra B. “The Effect of Functional Value and Epistemic Value on Tourist Satisfaction of Lake Toba”. ARRUS Journal of Social Sciences and Humanities 2, no. 1 (February 7, 2022): 26–31. Accessed June 3, 2026. https://journal.arrus.id/index.php/soshum/article/view/583.