Dilrukshi, U.T.L.; Dayananda, A.P.M.M.D.B.(Department of Library and Information Science, Faculty of Social Sciences, University of Kelaniya,Sri Lanka., 2017)
Gunathilaka, M. D. K. L.(International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)