1. Martin GJ. Ethnobotany- A Method Manual. London: Chapman and hall; 1995.
2. Balick MJ, Cox PAR. Plants, People and Culture. The Science of Ethnobotany. New York, USA: Scientific American Library; 1996.
3. Cotton CM. Ethnobotany:- Principles and Applications. Chichester, UK: John Wiley and Sons; 1996.
4. WHO. World Health Organization (WHO):- Traditional Medicine, Report by the Secretariat, 56th World Health Assembly, Provisional Agenda item 14.10, A56/18. Geneva; 2003.
5. Asfaw Z, Wondimu T. Introduction to Ethnobiology: People and the Biota. Addis Ababa: Addis Ababa University Press; 2007.