KRISHNAKUMAR JAYACHADRAN. The Impact of CRM and eCRM on Customer Retention and Profitability. International Journal of Computer Science and Information Technology Research , [S. l.], v. 3, n. 1, p. 29–36, 2022. Disponível em: https://ijcsitr.org/index.php/home/article/view/IJCSITR_2022_03_01_05.. Acesso em: 29 jan. 2026.