Clarence KCC, Dr. Romauli Nainggolan. PENGARUH PERSEPSI HARGA, ATMOSFER TEMPAT, DAN VARIASI MENU TERHADAP LOYALITAS PELANGGAN GISOE COFFEE SURABAYA. PERFORMA [Internet]. 2024 Aug. 31 [cited 2026 Feb. 19];9(2):112-26. Available from: https://ojs.somebut.my.id/index.php/performa/article/view/3984