1. Chauhan, N.S. (1999).Medicinal and Aromatic Plants of Himachal Pradesh.Indus Publishing Company, New Delhi, India. 632 pp.
2. Hunault, G., Desmarest, P. and Manoir, J. D. (1989).Foeniculum vulgareMiller: cell culture, regeneration and the production of anethole. In:Biotechnology in Agriculture and Forestry 7: Medicinal and Aromatic Plants II.(Bajaj, Y. P. S., Ed.). Springer-Verlag, Berlin, Germany. 185–212.
3. Samant, S. S., Dhar, U. and Palni, L. M. S. (2001).Himalayan Medicinal Plants – Potential and Prospects.Gyanodaya Prakashan, Nainital, India. 435 pp.
4. Snedecor, G. W. and Cochran, W. G. (1968).Statistical Methods.Oxford and IBH Publications, New Delhi, India. 227–279.
5. Wilkinson, L. (1986). SYSTAT: The system for statistics. System Inc., Evanston, IL, USA.