KEIVANI, Meysam; NAHAVANDI. A Study of Customer Retention in Today’s Competitive World. International Academic Journal of Business Management, [S. l.], v. 1, n. 2, p. 54–61, 2014. Disponível em: https://iaiest.com/iaj/index.php/IAJBM/article/view/IAJBM1410021. Acesso em: 28 oct. 2026.