Chanika, W.W.D.; Mudalige, Jayasinghe U.K.; Udugama, J.M.M.; Edirisinghe, J.C.; Ikram, S.M.M.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Herath, H.M.A.; Atugoda, S.(Department of Business Management, Faculty of Business Studies and Finance, Wayamba University of Sri Lanka. Kuliyapitiya, 2010)
Dananjaya, M.H.; Herath, H.M.I.K.; Gajanayake, B.; Wijebandara, D.M.D.I.; Pathirana, K.P.A.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2016)
Dasanayake, D.M.C.S.; Ikram, S.M.M.; Mudalige, Jayasinghe U.K.; Edirisinghe, J.C.; Udugama, J.M.M.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Wickramasinghe, H.K.J.P.; Kodithuwakku, K.A.H.T.; Jayasooriya, A.P.; Prathapasinghe, G.A.(Senate Research and Higher Degrees Committee, Wayamba University of Sri Lanka, 2017)