Hartana, Hartana. “EXISTENCE AND DEVELOPMENT GROUP COMPANIES IN THE MINING SECTOR (PT. BUMI RESOURCES TBK)”. Ganesha Law Review 2, no. 1 (May 13, 2020): 54-69. Accessed October 5, 2024. https://semnas-fmipa.undiksha.ac.id/index.php/GLR/article/view/120.