Wardana AB, Sumarmi W. Measurement of Consumer Satisfaction of Product Quality Using the Customer Satisfaction Index Method and Importance Performance Analysis: Pengukuran Kepuasan Konsumen Terhadap Kualitas Produk Menggunakan Metode Customer Satisfaction Index Dan Importance Perfomance Analysis. ijins [Internet]. 2019 Apr. 3 [cited 2025 Jun. 19];6. Available from: https://ijins.umsida.ac.id/index.php/ijins/article/view/132