1. Beardsworth, A. and Keil, T., 1997.Sociology on the menu: an nvitation to the study of food and society. London: Routledge
2. A comparison of reliability between telephone and web-based surveys
3. de Schutter, O., 2010. Food commodities speculation and food price crises: regulation to reduce the risks of price volatility. Briefing Note 02. Available from:http://www.iaahp.net/uploads/media/20102309_briefing_note_02_en.pdf[Accessed 24 September 2010]