Siregar, I. M. ., & Haryono, S. . (2023). Green Banking: Operating Costs on Operating Income, Capital Adequacy Ratio, Financial Slack, Sustainability Officer, and Sustainability Committee . Jurnal Ekonomi Syariah Teori Dan Terapan, 10(5), 427–442. https://doi.org/10.20473/vol10iss20235pp427-442