Harshana, S.D.; Kumara, I.M.N.S.; Dissanayake, B.M.N.B.(Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2016)
Vitharana, S.; Sumedha, K.; Jayaweera, S.; Manuratne, P.(Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2016)
Laavanya, M.; Sadeera, S.D.H.; Premachandra, W.M.C.M.; Priyangani, T.R.A.; Dahanaka, D.R.N.S.; Josepha, J.; Karthijekan, K.; Kartheepan, K.(Research Centre for Social Sciences, Faculty of Social Sciences, University of Kelaniya, Sri Lanka, 2016)