Achieving Sustainable Competitive Advantage Through Service Quality: An Analysis of Pakistan’s Telecom Sector. Global Journal of Management and Business Research, [S. l.], v. 13, n. 39, p. 39–45, 2013. Disponível em: https://journalofbusiness.org/index.php/GJMBR/article/view/103325. Acesso em: 18 oct. 2026.