VGunasekara, H.; Fernando, A.K.; Padmasika, T.; Muthugoda, N.S.(Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2016)
Premathilaka, A.M.H.K.; Wijewantha, P.(Department of Human Resource Management, Faculty of Commerce and Management Studies, University of Kelaniya, 2015)