Ginting, Y. M., Chandra, T., Oktariyanto, O., & Endrawati, E. (2023). A Study Of Servqual And Customer Satisfaction Using Customer Satisfaction Index (Csi), Importance Performance Analysis (Ipa) And Improvement Factor (If) Method. Economics and Digital Business Review, 5(1), 373–393. https://doi.org/10.37531/ecotal.v5i1.738