The Influence of Sales Promotion, Brand Trust, and Ease of Use on Customer Loyalty: A Study on Students of UPN "Veteran" East Java: Pengaruh Promosi Penjualan, Kepercayaan Merek, dan Kemudahan Penggunaan terhadap Loyalitas Pelanggan Studi pada Mahasiswa UPN "Veteran" Jawa Timur. EKONIKA [Internet]. 2024 Sep. 30 [cited 2025 Dec. 6];9(2):464-8. Available from: https://ojs.unik-kediri.ac.id/index.php/ekonika/article/view/5498