Laura Puspita Sari. “Fuel Consumption Efficiency Regarding the Road Quality in the Coal Mine: A Case Study”. Jurnal Sistem dan Manajemen Industri 5, no. 1 (June 30, 2021): 25–34. Accessed June 14, 2025. https://e-jurnal.lppmunsera.org/index.php/JSMI/article/view/2995.