Dissanayake, A.; Arachchige, O.; Dissanayake, N.B.; Kumari, H.V.M.; Pitigala, P.K.G.C.(Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2016)
Kularathne, M.G.; de Silva, D.A.M.; Hettiarachchi, I.C.(Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2016)
Suraweera, S.A.D.H.N.; Liew, C.L.; Cranefield, J.(Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2016)