Aratthanage, K.D.B.; Premachandra, N.G.P.R.; Kirushika, J.; Madhushika, T.D.T.; Subasighe, H.P.I.; Wanigasuriya, N.C.(The Open university of Sri Lanka, 2025)
Vitharana, V.P.M.; Fernando, P.S.A.M.; Rukshitha, S.V.S.; Nethmini, K.D.; Dharmasena, N.P.M.S.; Wickramasinghe, B.M.G.S.T.S.K.(The Open university of Sri Lanka, 2025)
Aratthanage, K.D.B.; Fernando, W.A.L.P.; Madhushika, T.D.T.; Subasighe, H.P.I.; Premachandra, N.G.P.R.; Wanigasuriya, N.C.(The Open university of Sri Lanka, 2025)