JAKARIA, S. M., dan Y. HELIANTY. “USULAN PENINGKATAN PELAYANAN BERDASARKAN METODE SERVQUAL DAN IMPORTANCE PERFORMANCE ANALYSIS DI PT. XYZ”. E-Proceeding FTI, Desember 2024, https://eproceeding.itenas.ac.id/index.php/fti/article/view/3084.