1. Waste plastics recycling: a good practices guide by and for local and regional authorities;ACRR (Association of cities and regions for recycling),2002
2. National Postconsumer Recycled plastic bag and film report, Feb 2011, prepared for the American Chemistry Council;American Chemistry Council,2011
3. Plastics: Materials and processing.;Brent Strong,2005
4. British Polythene Industries http://www.foodproductiondaily.com/Packaging/BPI-counts-the-cost-of-raw-material-hikes-vows-recycling-ops-boost 2011. Retrieved 7.3.2013.
5. CES Cambridge Engineering Selector. http://www.grantadesign.com/products/ces/2008.