Lofton Henderson; et al. <a href="http://www.w3.org/TR/2001/REC-WebCGM-20011217"><cite>WebCGM 1.0 Second Release.</cite></a> 17 December 2001. W3C Recommendation. URL: <a href="http://www.w3.org/TR/2001/REC-WebCGM-20011217">http://www.w3.org/TR/2001/REC-WebCGM-20011217</a>