MUHYIDDIN, A. S. .; INDRAWATI, I. Optimizing Customer Relationship Management with Surprise Program: A Quantitative Approach. International Journal of Management and Digital Business , [S. l.], v. 3, n. 2, p. 110–121, 2024. DOI: 10.54099/ijmdb.v3i2.1131. Disponível em: https://journal.adpebi.com/index.php/ijmdb/article/view/1131. Acesso em: 15 jun. 2025.