Bhutto, R. A. and Maqsood, A. (2007) “Customer Services: A Case Study of Cellular Phone Companies in Pakistan ”, JISR management and social sciences & economics, 5(1), pp. 19–23. Available at: https://jisrmsse.szabist.edu.pk/index.php/szabist/article/view/366 (Accessed: 11 May 2024).