Abeyrathna, D.M.N.D.; Jayasekera, S.J.B.A.; Banda, Gunarathna, R.M.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Amarasinghe, K.G.A.P.K.; Ranasinghe, C.S.; Abeysinghe, D.C.; Perera, A.A.F.L.K.(Senate Research and Higher Degrees Committee, Wayamba University of Sri Lanka, 2017)
GunasekAra, M.P.N.I.; Ranaweera, B.; Kelaniyangoda, D.B.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2006)
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)
Jayawardane, L.U.S.S.; Senevirathne, P.; Nayanakantha, C.; Wickramasinghe, W.M.E.P.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)
Warnasuriya, W.M.A.N.; Wijetilaka, L.C.; Ranaweera, B.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka, Makandura, 2005)