MUHAMAD FAHRUL RAIHAN; HENI HIRAWATI. Analisa Struktur Modal dan Likuiditas Terhadap Profitabilitas Pada Perusahaan Sub Sektor Batubara. OPTIMAL Jurnal Ekonomi dan Manajemen, [S. l.], v. 2, n. 4, p. 316–328, 2022. DOI: 10.55606/optimal.v2i4.761. Disponível em: https://researchhub.id/index.php/optimal/article/view/761. Acesso em: 12 may. 2025.