1. Wiart C (2002) Medicinal plants of South East Asia. Prentice Hall, Selangor
2. Wallis TE (1985) Text book of pharmacognosy. CBS Publishers & Distributors, New Delhi
3. Duke JA, Bogenschutz-Godwin MJ, Du celliar J, Duke PK (2002) Hand book of medicinal herbs, 2nd edn. CRC Press, Boca Raton
4. Baquar SR (1989) Medicinal and poisonous plants of Pakistan. Printas, Karachi
5. Kapoor LD (2000) Handbook of Ayurvedic medicinal plants. CRC Press, Boca Raton