1. Bhattacharjee, S.K. 2003.Hand Book of Medicinal Plants, 30Jaipur: Pointer Publisher.
2. Perry, L.M. and Metzger, J. 1980.Medicinal Plants of East and South Asia, 341–347. Cambridge: The MIT Press.
3. Krishna, A. 1972.The Wealth of India, Vol. 9, 435New Delhi: CSIR.
4. Jayaweera, D.M.A. 1982.Medicinal Plants, Vol. 4, 2574715 Maitland Place, Colombo: N. S. C of Sri Lanka.
5. Krachmal, A.C. 1980.A Guide to the Medicinal Plants of United States, 9–207. New York: Quadrangle New York Times Book Co.