Pathirana, A.P.C.S.; Sumanasena, H.A.; Fernandopulle, M.N.D.; Amarasinghe, K.G.A.P.K.; Priyadarshani, K.D.N.(Faculty of Agriculture and Plantation Management,Wayamba University of Sri Lanka, Makandura, 2013)
Sisirakumara, M.A.K.W.; Wickramasinghe, W.M.P.M.; Karunananda, G.A.C.M.(Faculty of Applied Sciences, Wayamba University of Sri Lanka:Kuliyapitiya, 2016)