Retno Nur Alfanti; Erna Herlinawati; Wijaya, F. Pengaruh Non Performing Loan (NPL), Biaya Operasional Pendapatan Operasional (BOPO), Net Interest Margin (NIM), Debt to Equity Ratio (DER) Terhadap Return On Asset (ROA) Pada Bank KB Bukopin Periode 2012-2022. jemsi 2024, 10, 445-453.