Ramanaka, A.R.N.D.; Bandara, K.A.W.P.; Wehigaldeniya, W.G.D.S.; Oshani, P.A.L.; Dilshani, P.Y.H.; Jayantha, K.(Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2016)
Jayathilake, H.D.Y.D.; Edirisinghe, E.A.D.A.; Subramanian, K.(Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2016)