1. Marks & Spencer 2008 http://corporate.marksandspencer.com/investors/press_releases/company/260808_carrier_bag_update
2. Hyder Consulting Plastic retail carry bag use 2008
3. ExcelPlas, RMIT, and Nolan-ITU The Impacts of Degradable Plastic Bags in Australia 2003
4. Clean Up Australia Say NO to Plastic Bags 2005 http://www.noplasticbags.org.au/home/default.aspx