Yuniati, T., Noor Fikri, A. W. and Richo Rianto, M. (2025) “Determinants of profitability in indonesia’s big banks: the role of capital structure, operational efficiency (bopo), and net profit margin (npm) during the 2020–2024”, Enrichment : Journal of Management, 15(5), pp. 577-587. doi: 10.35335/enrichment.v15i5.2406.