RAHMAN, F. S. . USULAN PENINGKATAN KUALITAS PELAYANAN DI TOKO SAVEMYMONDAY MENGGUNAKAN IMPORTANCE PERFORMANCE MATRIX (IPM) DAN METODE 5 WHY. e-Proceeding FTI, [S. l.], v. 1, n. 1, 2022. Disponível em: https://eproceeding.itenas.ac.id/index.php/fti/article/view/615. Acesso em: 1 feb. 2026.