Service Quality and Customer Satisfaction: The Case of Cellular Phone users of Ethio-Telecommunications in Ambo Town. Global Journal of Management and Business Research, [S. l.], v. 15, n. E7, p. 1–7, 2015. Disponível em: https://journalofbusiness.org/index.php/GJMBR/article/view/1783. Acesso em: 19 feb. 2026.