Khairunnida, Lubis R, Khair R. THE APPLICATION OF THE NET PROMOTER SCORE (NPS) METHOD IN MEASURING CUSTOMER SATISFACTION IN THE RETAIL INDUSTRY IN MEDAN. Jurnal Ekonomi [Internet]. 2023 Oct. 31 [cited 2026 May 2];12(04):1556-61. Available from: https://www.ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/3250