Chandra Deri Andika, et al. “The Effect of Perceived Value Using the Gamification Program on Customer Loyalty through Customer Satisfaction As an Intervening Variable (Study on Dana E-Wallet Application Users)”. JEMSI (Jurnal Ekonomi, Manajemen, Dan Akuntansi), vol. 9, no. 4, Aug. 2023, pp. 1679-90, https://doi.org/10.35870/jemsi.v9i4.1472.