1. http://www.fao.org/docrep/018/i3347e/i3347e.pdf
2. http://www.fao.org/docrep/014/mb060e/mb060e.pdf
3. http://www.wri.org/sites/default/files/uploads/Food_loss_and_waste_protocol_Summary_Overview_Oct_2014.pdf
4. http://www.wrap.org.uk/content/household-food-and-drink-waste-uk-2012
5. http://www.wrap.org.uk/sites/files/wrap/Food waste in schools full report .pdf