Dissanayake, N.B.; Kalansooriya, J.; Kumari, H.V.M.; Arachchige, O.; Pitigala, P.K.G.C.(Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2016)
Ranjan, K.R.H.M.; Guruge, T.P.S.R.; Jayasinghe-Mudalige, U.K.(Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2016)
Jayakody, J.A.D.P.P.; Seneviratna, N.A.K.P.J.(Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2016)