1. R.N. Chopra, S.L. Nayar and I.C. Chopra,Glossary of Indian Medicinal Plants, p. 13, Council of Scientific and Industrial Research (CSIR), New Delhi (1986).
2. K.E. Kirtikar and B.D. Basu,Indian Medicinal Plants, Vol. IV, 2nd edn. M/s Bishen Singh Mahendra Pal Singh, New Delhi (1935).
3. Volatile Oils ofAlpinia calcarataRosc. Grown in Sri Lanka