- http://composite.about.com
- http://en.wikipedia.org/wiki/Closed-cell_PVC_foamboard
- http://www.acmanet.org/
- http://www.compositesuk.co.uk/
- http://www.asc-composites.org/
- www.composites-proc-assoc.co.uk
- http://www.acss.org.au/
- http://www.compositesworld.com/
- http://compositeswiki.org/
- http://www.compositestoday.com/