KEN, ken; FEBRIANTO, F.; RIDHO, A. INVESTMENT FEASIBILITY STUDY OF PT HARDAYA MINING ENERGY SEBAKIS ON SITE COAL LABORATORY IN 2022. Jurnal Ilmiah Global Education, [S. l.], v. 4, n. 2, p. 685–691, 2023. DOI: 10.55681/jige.v4i2.795. Disponível em: https://ejournal.nusantaraglobal.or.id/index.php/jige/article/view/795. Acesso em: 7 jan. 2025.