Sudirjo, Frans, Faridah Faridah, Wahyuni Sri Astutik, and Arnes Yuli Vandika , trans. “The Effect of Customer Relationship Management, Digital Advertising, and Discount Programs on Customer Loyalty at Start-Ups in Jakarta”. West Science Interdisciplinary Studies 2, no. 07 (July 31, 2024): 1434–1443. Accessed April 15, 2025. https://wsj.westsciences.com/index.php/wsis/article/view/1101.