Arum, Ardhani Tirta, and Indah Mustikorini. “Pengaruh Kualitas Produk, Kualitas Pelayanan Dan Persepsi Harga Terhadap Loyalitas Pelanggan Kopi Kenangan Di Surabaya Selatan”. Surplus: Jurnal Ekonomi dan Bisnis 5, no. 1 (July 9, 2026): 313–324. Accessed November 9, 2026. https://yptb.org/index.php/sur/article/view/2220.