Sathanandan, R.; Situbandara, S.N.B.A.; Gunasinghe, D.P.D.D.; Gunasekara, M.S.T.; Navarathne, D.M.A.S.; Gunawardena, S.(Department of English, Faculty of Humanities, University of Kelaniya, Sri Lanka, 2016)
Jayasingha, I.; Bandara, R.; Jayawardhana, R.; Wijayabandara, C.(English Language Teaching Unit, Faculty of Humanities, University of Kelaniya, Sri Lanka, 2016)