Reza Ryan Saputra Syukri and Edy Suisno (2024) “Sejarah Pertambangan Batubara Sawahlunto Dalam Film Dokumenter ”Tambang Asa””, Nusantara Journal of Multidisciplinary Science, 2(4), pp. 973–981. Available at: https://jurnal.intekom.id/index.php/njms/article/view/912 (Accessed: 29 October 2026).