Raja, K. G., and S. Rose. “Evaluating the Differences Between Managerial and Executive Level Personal Competencies - A Critical Analysis of Select IT Companies”. DHARANA - Bhavan’s International Journal of Business, vol. 4, no. 2, Sept. 2017, pp. 71-76, http://informaticsjournals.com/index.php/dbijb/article/view/18038.