Melanie, M., & Febriyanti, D. (2025). Influence Net Profit Margin, Debt to Equity Ratio, Return on Assets and Current Ratio Against Effective Tax Rate: (In Sub Sector Companies Coal Mining Companies Listed on the Indonesia Stock Exchange 2016-2023). International Journal of Community Service & Engagement, 6(1), 24 - 47. https://doi.org/10.47747/ijcse.v6i1.2645