1. Soil Association organic market report 2007;Soil Association,2007
2. Organic food: global industry guide;Datamonitor,2008
3. Council Regulation (EC) no. 834/2007 of 28 June 2007 on organic production and labelling of organic products and repealing Regulation (EEC) no. 2092/91;European Community Council Regulation,2007
4. The IFOAM norms for organic production and processing: version 2005;International Federation of Organic Agriculture Movements,2007
5. Nutritional quality of organic versus conventional fruits, vegetables, and grains;Worthington;J Altern Complement Med,2001