Atmaja, Alvin Albertha Dwi , Afiff, Adi Zakaria. “Customer Loyalty of Fixed-Broadband Provider in Indonesia : The Role of Service Quality for Internet Service Providers and Customer Relationship Management Quality ”. International Journal of Advanced Science and Technology, Vol. 29, no. 12s, June 2020, pp. 1571-84, http://sersc.org/journals/index.php/IJAST/article/view/22832.