Wahyudi, Andria, Patricia Adam, and Geral Jesyriviano. “Virtual Reality of Historical Places in North Sulawesi”. CogITo Smart Journal 3, no. 1 (July 13, 2017): 32–41. Accessed July 26, 2025. https://cogito.unklab.ac.id/index.php/cogito/article/view/43.