Dona Tri Ardillah, Bunga Aditi, Sunaryo. THE ROLE OF ENTREPRENEURIAL ORIENTATION AND MARKETING PERFORMANCE IN MAINTAINING SUSTAINABLE COMPETITIVE ADVANTAGE IN COFFEE SHOPS IN MEDAN. IJSET [Internet]. 2025 Sep. 20 [cited 2026 Jun. 24];4(11):3534-60. Available from: https://ijset.org/index.php/ijset/article/view/1180