YAPRAKLI, T. Şükrü, & GÜL, B. (2019). THE EFFECT OF SERVICE QUALITY OF GSM OPERATORS CALL CENTERS ON BRAND LOYALTY. Al Farabi Uluslararası Sosyal Bilimler Dergisi, 4(3), 48–62. Retrieved from https://alfarabijournal.com/index.php/pub/article/view/153