Ranasinghe, A.U.; Ranaweera, B.; Kiessel, A.; Herath, H.M.L.K.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka:Gonawila, 2015)
Hitihamu, S.; Lurdu, M.D.S.; Hector Kobbekaduwa Agrarian Research and Training Institute(Hector Kobbekaduwa Agrarian Research and Training Institute:Colombo, 2015)
Gunawardana, W.D.T.; Ranasingha, A.S.Y.P.; Wijesooriya, H.D.S.N.; Gajanayake, B.(Faculty of Agriculture and Plantation Management, Wayamba University of Sri Lanka:Makandura, 2018)