SINGH, K. Importance of Customer Loyalty in Telecommunication Sector. International Journal of Applied Research in Management and Economics, [S. l.], v. 3, n. 4, p. 27–36, 2020. DOI: 10.33422/ijarme.v3i4.508. Disponível em: https://www.dpublication.com/journal/IJARME/article/view/508. Acesso em: 12 oct. 2025.