Sudirjo, Frans, Faridah Faridah, Wahyuni Sri Astutik, and Arnes Yuli Vandika , trans. 2024. “The Effect of Customer Relationship Management, Digital Advertising, and Discount Programs on Customer Loyalty at Start-Ups in Jakarta”. West Science Interdisciplinary Studies 2 (07): 1434-43. https://doi.org/10.58812/wsis.v2i07.1101.