Sarah Elicia Roitona Gultom. THE INFLUENCE OF PRODUCT PROMOTION ON THE DECISION TO USE QRIS (QUICK RESPONSE CODE INDONESIAN STANDARD) AT STARBUCKS MEDAN CITY. tajiir [Internet]. 2024 Aug. 3 [cited 2026 Mar. 3];1(01):175-82. Available from: https://theamericanjournals.com/index.php/tajiir/article/view/5333