PRATAMA, M. N.; DESRIANTY, A. Perbaikan Kualitas Pelayanan Customer Service PT. XYZ Berdasarkan Importance Performance Analysis (IPA). e-Proceeding FTI, [S. l.], 2024. Disponível em: https://eproceeding.itenas.ac.id/index.php/fti/article/view/3418. Acesso em: 1 feb. 2026.