1. DairyCo World cows milk production http://www.dairyco.org.uk/library/market-information/milk-supply/world-cows-milk-production.aspx
2. DEFRA Family food datasets http://www.defra.gov.uk/evidence/statistics/foodfarm/food/familyfood/documents/
3. The community summary report on food-borne outbreaks in the European Union in 2007;EFSA;EFSA Journal,2009
4. DairyUK The white paper: A report on the UK dairy industry June 2010 http://www.dairyuk.org/
5. Harding F Could our milk be Safer? Milk Industries International 2000