Ahmed, S. M. S., and M. R. Hassan. “USERS’ SATISFACTION LEVEL TOWARDS TELECOMMUNICATION OPERATORS: A STUDY ON GRAMEENPHONE AND BANGLALINK”. ANGLISTICUM. Journal of the Association-Institute for English Language and American Studies, vol. 7, no. 10, Nov. 2018, pp. 39-57, https://www.anglisticum.org.mk/index.php/IJLLIS/article/view/1770.