KATURI, P. K. ., K. V. . KUMAR, and H. . PUTTA. “A Case Study On Profitability Analysis Of Vijayawada Tollway Private Ltd (Vtpl)”. The Journal of Contemporary Issues in Business and Government, vol. 27, no. 2, Apr. 2021, pp. 2135-41, https://cibgp.com/au/index.php/1323-6903/article/view/1117.