Septian Adi, M., and H. Pudjoprastyono. “THE EFFECT OF SERVICE QUALITY, PROMOTION AND PRICE PERCEPTION ON CUSTOMER LOYALTY AT THE BUMANTARA COFFEE SHOP IN SURABAYA CITY: THE EFFECT OF SERVICE QUALITY, PROMOTION AND PRICE PERCEPTION ON CUSTOMER LOYALTY AT THE BUMANTARA COFFEE SHOP IN SURABAYA CITY”. Management Science Research Journal, vol. 5, no. 2, May 2026, pp. 40-48, doi:10.56548/msr.v5i2.213.