Laksiri, P. H. P. N.; Indika, W. A.; Madushika, M. K. S.; Wathugala, D. L.(Faculty of Commerce and Management Studies University of Kelaniya, Sri Lanka, 2020)
Ayeshmantha, B. A. M.; Wilwala Arachchi, W. A. M. H.; Herath, H. M. R. P(Faculty of Commerce and Management Studies University of Kelaniya, Sri Lanka, 2020)
Fernando, W. W. J. N.; Subasinghe, I. K.; Fernando, W. B. N. D.; Herath, H. M. R. P(Faculty of Commerce and Management Studies University of Kelaniya, Sri Lanka, 2020)
Abhayathunga, P.M.; Adikari, A.A.C.K.; Udalagama, R.D.B.B.W.M.R.C.R.; Kumarapperuma, C.U.(Faculty of Commerce and Management Studies, University of Kelaniya, 2021)