Azis, Musdalifah. “COAL PRICES AND FINANCIAL PERFORMANCE TOWARD COAL MINING COMPANY VALUE”. International Journal of Psychosocial Rehabilitation 24, no. 4 (June 30, 2020): 8926–8936. Accessed June 20, 2025. https://www.psychosocial.com/index.php/ijpr/article/view/6113.