WOGU, O. E.; OISAMOJE, M. D. Customer Service Quality Perception and Expectation of GSM Companies in Benin City, Nigeria. The International Journal of Business & Management, [S. l.], v. 4, n. 2, 2015. Disponível em: http://www.internationaljournalcorner.com/index.php/theijbm/article/view/126229. Acesso em: 21 may. 2024.