CHUKWU, G. C.; NGIRIKA, D.; IGANI, D. C. Transparency as Key Indicator for Improving Sales Performance in the Telecommunication Sector (A Study of MTN Nigeria). Nigerian Academy of Management Journal, [S. l.], v. 15, n. 4, p. 67–79, 2020. Disponível em: https://namj.tamn-ng.org/index.php/home/article/view/9. Acesso em: 16 apr. 2026.