Prasetyo, Andreas Yogi, Eki Melina Widanti, and Atika Nur Hidayah. “Commitment to Environmental Preservation in The Nglanggeran Ancient Volcano Ecotourism Area”. International Journal of Applied Sciences in Tourism and Events 9, no. 1 (June 30, 2025): 56–66. Accessed December 5, 2025. https://ojs2.pnb.ac.id/index.php/IJASTE/article/view/2440.