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, [S. l.], v. 12, n. 04, p. 1556–1561, 2023. Disponível em: https://ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/3250. Acesso em: 3 jun. 2025.