Zuhra Mayana, Siti, and Siti Nurhayati. 2025. “Legal Protection of Consumers for Cashless Payment at Coffeeshop ( Study at Common Folks Medan )”. International Conference Epicentrum of Economic Global Framework, June, 508-14. https://proceeding.pancabudi.ac.id/index.php/ICEEGLOF/article/view/368.