Lastri, N. et al. 2025. Optimizing Service Delivery for Customer Satisfaction: Qualitative Study from PT. Bank Syariah Indonesia, Tbk Dumai Branch Office, Indonesia. Golden Ratio of Marketing and Applied Psychology of Business. 5, 2 (Mar. 2025), 379–385. DOI:https://doi.org/10.52970/grmapb.v5i2.975.