1. R. N. Chopra, S. L. Nayer andI. C. Chopra,Glossary of Indian Medicinal Plants (Council of Scientific and Industrial Research, New Delhi 1956), p. 24.
2. K. R. Kirtikar andB. D. Basu,Indian Medicinal Plants III (L. M. Basu, Allahabad 1935), p. 2123.
3. K. P. Biswas andA. Ghosh,Bharatiya Bonousadhi IV (Calcutta University, India 1973), p. 985.