Setyaningrum FE. Customer Satisfaction Index (CSI) and Importance Performance Analysis (IPA) Methods of Exclusive Matte Lip Cream. IJIEM [Internet]. 2020 Jun. 30 [cited 2026 May 28];1(2):116-2. Available from: https://training-ojs3-publikasi.mercubuana.ac.id/index.php/ijiem/article/view/10220