MUHAMMED ZAKIR HOSSAIN. Building Sustainable Relationships through Customer Support Service in Telecommunication Industry. Global Journal of Management and Business Research, [S. l.], v. 17, n. E2, p. 43–55, 2017. Disponível em: https://journalofbusiness.org/index.php/GJMBR/article/view/2319. Acesso em: 17 may. 2024.