Agus Triani, R. 2023. Pengaruh Service Quality, Promotion, dan Convenience Penggunaan Aplikasi KAI Access Terhadap Customer loyalty Melalui Customer Satisfaction PT Kereta Api Indonesia. Jurnal Perkeretaapian Indonesia (Indonesian Railway Journal). 7, 1 (Apr 2023), 20–31. DOI:https://doi.org/10.37367/jpi.v7i1.273.