Marketing strategies for customer loyalty in three supermarkets in 2024, located in the city of Estelí, Nicaragua. Revista Científica Estelí, [S. l.], v. 14, n. 53, p. 89–111, 2025. DOI: 10.5377/esteli.v14i53.20329. Disponível em: https://revistas.unan.edu.ni/index.php/Cientifica/article/view/5026. Acesso em: 6 aug. 2025.