Muhammad Ridwan Saputra, and Rianti Rismayanti. “Analyzing Amethyst Crystal Stones at the Bandung Geology Museum”. An International Journal Tourism and Community Review 2, no. 2 (May 31, 2025): 41–44. Accessed July 1, 2025. https://journal.aksibukartini.ac.id/index.php/TourCom/article/view/252.