Wardana, A.B. and Sumarmi, .W. 2019. 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. Indonesian Journal of Innovation Studies. 6, (Apr. 2019). DOI:https://doi.org/10.21070/ijins.v6i0.132.