Jharna Agrawal, and Preeti Garg. “A Study on Marketing Strategies of Telecom Service Provider’swith Special Reference to Delhi”. Elementary Education Online 20, no. 5 (December 19, 2023): 3139–3146. Accessed January 5, 2025. https://ilkogretim-online.org/index.php/pub/article/view/5725.