Sarah Elicia Roitona Gultom. 2024. “THE INFLUENCE OF PRODUCT PROMOTION ON THE DECISION TO USE QRIS (QUICK RESPONSE CODE INDONESIAN STANDARD) AT STARBUCKS MEDAN CITY”. The American Journal of Interdisciplinary Innovations and Research 1 (01):175-82. https://doi.org/10.37547/tajiir/NICSPEEP-2024-01-16.