Ramawickrama, J.; Opatha, H.H.D.N.P.; PushpaKumari, M.D.("Faculty of Management Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka", 2018-12-06)
De Silva, M.T.T.; Tharanganie, M.G.G.(Academy for Global Business Advancement’s 15th World Congress, National Institute of Development Administration, Bangkok, Thailand., 2018)