Rukmana, Febi Indriyanti. “Implementation Of Standard Operational Procedure (Sop) In Improving Service Efficiency In The Banking Industry”. Journal of Law and Social Politics 1, no. 2 (August 31, 2023): 108–119. Accessed August 14, 2026. https://mail.jolastic.id/index.php/jlsp/article/view/15.