Samarakoon, S.M.R.K.; Kumara, U.E.S.; Gunarathne, U.G.V.D.D.(Faculty of Business Studies and Finance, Wayamba University of Sri Lanka. Kuliyapitiya, 2014)
Tennakoon, W.D.N.S.M.; Arachchi, R.S.S.W.(Department of Business Management, Faculty of Business Studies and Finance, Wayamba University of Sri Lanka. Kuliyapitiya, 2010)