Ranawaka, R. A. B. M.; Nisansala, H. M. D.; Sirimuthu, N. M. S.; Chami Patabendige, N. K.(Faculty of Graduate Studies , University of Sri Jayewardenepura, 2019)
Diddeniya, S. I. A. P.; Wanniarachchi, W. K. I. L.; De Silva, P. R. S.; Ganegoda, N. C.(Faculty of Graduate Studies , University of Sri Jayewardenepura, 2019)
Walisundera, A.E.; Arachchige, B.J.H.(Department of Human Resource Management Faculty of Management Studies and Commerce University of Sri Jayewardenepura, 2016)