Arulrajah, A.A.; Opatha, H.H.D.N.P.(Department of Human Resource Management Faculty of Management Studies and Commerce University of Sri Jayewardenepura, 2012)
Ramawickrama, J.; Opatha, H.H.D.N.P.; Pushpakumari, M.D.(Department of Human Resource Management Faculty of Management Studies and Commerce University of Sri Jayewardenepura, 2018)
Iddagoda, Y.A.; Opatha, H.H.D.N.P.(Department of Human Resource Management Faculty of Management Studies and Commerce University of Sri Jayewardenepura, 2017)
Opatha, H.H.D.N.P.; Perera, H.(Department of Human Resource Management Faculty of Management Studies and Commerce University of Sri Jayewardenepura, 2017)
Opatha, H.H.D.N.P.; Rathnayake, S.(Department of Human Resource Management Faculty of Management Studies and Commerce University of Sri Jayewardenepura, 2018)
Weragoda, R.B.L.; Opatha, H.H.D.N.P.(Department of Human Resource Management Faculty of Management Studies and Commerce University of Sri Jayewardenepura, 2015)
Arulrajah, A. A.; Opatha, H.H.D.N.P.; Nawaratne, N.N.J.(Department of Human Resource Management Faculty of Management Studies and Commerce University of Sri Jayewardenepura, 2016)