KRISNAWATI, Febrian; EKAWATI, Ardhianiswari Diah. Improving Service Quality in a Tutoring Institutions using Fuzzy-Servqual. Jurnal PASTI (Penelitian dan Aplikasi Sistem dan Teknik Industri), Jakarta, Indonesia, v. 19, n. 3, p. 314–325, 2025. DOI: 10.22441/pasti.2025.v19i3.002. Disponível em: https://training-ojs3-publikasi.mercubuana.ac.id/index.php/pasti/article/view/34298. Acesso em: 29 may. 2026.