Sukmawati, Fitri, Sintya Amelia Putri, and Mira Amaliyah. 2022. “The Effect of Third-Party Funds (DPK) and Non-Performing Loans (NPL) Upon Operating Costs of Operating Income (BOPO) (Case Study on Conventional Commercial Banks for the 2017-2021 Period)”. TEC EMPRESARIAL 17 (2):245-55. https://doi.org/10.1229/tecempresarialjournal.v17i2.104.