Maulida Dewi Amanda and Dwi Sukma Donoriyanto 2025. Analysis of Service Quality in Access by KAI Application Using E-ServQual Method and Root Cause Analysis (RCA). Journal of Research and Technology. 11, 1 (Jun. 2025), 11–20. DOI:https://doi.org/10.55732/jrt.v11i1.1527.