1. The Wealth of India, A dictionary of indian raw materials and industrial products, Vol X, Publications and information directorate, CSIR, New Delhi, 1976, pp. 77–81.
2. R.S. Thakur, H.S. Puri, A. Hussain, Major medicinal plants of India, CIMAP, Lucknow, India, 1989, pp. 41–43.
3. S.G. Joshi (Ed.), Medicinal Plants, Oxford and IBH, New Delhi, 2000, pp. 216.
4. S.K. Bhattacharjee, Handbook of medicinal plants, Pointer publishers, Jaipur, India, 2001, pp. 69–71.
5. A xanthone from Swertia chirayita;Asthana;Phytochem,1991