Rathnathunga, E.U.U.,Weerakkody, A.S., Jayaprada, N.V.T.,Warakagoda, P.S., Subasingha, S., and Geekiyanage, S.
Proceedings of the National Symposium on Floriculture Research, NaSFLORA. SLCARP and Department of National Botanical Gardens, Sri Lanka. ISBN: 978-955-9224-53-2.