KANAGARAJU, Dr.P., and R. KARTHIKEYAN. “CUSTOMER SATISFACTION SELECTED CELLULAR SERVICES PROVIDERS IN VILLUPURAM DISTRICT”. The journal of contemporary issues in business and government 27, no. 5 (October 30, 2021): 1243–1254. Accessed June 27, 2025. https://cibgp.com/index.php/1323-6903/article/view/2056.