Putri NND, Ningsih AR, Nasution AS, Endyra F, Ihsan F, Masyitah M. Analysis of Customer Satisfaction at Coffee Shops Using the Quality Function Deployment (QFD) Approach Integrated with the Importance-Performance Analysis (IPA) Method. jestm [Internet]. 2026 Mar. 31 [cited 2026 Jun. 17];6(1):302-15. Available from: https://jes-tm.org/index.php/jestm/article/view/434