E-CRM Mobile Applications To Improve Customer Loyalty (Case Study: PT Supermal Karawaci). APTISI Transactions on Management, [S. l.], v. 4, n. 1, p. 41–48, 2019. DOI: 10.33050/atm.v4i1.1083. Disponível em: https://www.ijc.ilearning.co/index.php/ATM/article/view/1083. Acesso em: 4 oct. 2025.