1. Chopra R.N., Badhwan R. K., Ghosh S. Poisonous Plants of India. I.C.A.R., New Delhi 1965; 270
2. Chopra R.N., Chopra I.C., Handa K. L., Kapoor L. D. Indigenous drugs of India 2nd edition. Shantimohan House, Ansari Nagar, New Delhi 1982; 327
3. Chopra R.N., Nayar S. L., Chopra I. C. Glossary of Indian Medicinal Plants. Council of Scientific and Industrial Research, New Delhi 1956; 195
4. A simple and inexpensive steam generator for essential oils extraction
5. Gallent H., Hemslay W. B. Flora of Simlensis Third Edition. M/s. Bishan Singh Mahondra Pal Singh, New Delhi, Connaught Place, Dehradun 1971; 106