Nababan D. The Influence Of Loan To Deposit Ratio (Ldr) And Operational Cost Towards Operational Income (Bopo) Against Return On Assets. Psychosocial rehabilitation [Internet]. 2020 Apr. 30 [cited 2025 Aug. 8];24(2):7780-9. Available from: https://psychosocial.com/index.php/ijpr/article/view/2664