IHSAN, R.; HELIANTY, Y. Usulan Peningkatan Kualitas Pelayanan Coffee Shop Titik Koma Gading Serpong Menggunakan Metode Service Quality (Servqual) dan Importance Performance Analysis (IPA). e-Proceeding FTI, [S. l.], v. 1, n. 2, 2023. Disponível em: https://eproceeding.itenas.ac.id/index.php/fti/article/view/1699. Acesso em: 1 feb. 2026.