- W3C Recommendation, (August 2002)
- Wrox Press, Chicago, Illinois, (March 2000)
- World Wide Web Consortium, Working Draft WD-xhtml-forms-req-20000821, (August 2000)
- World Wide Web Consortium, Working Draft WD-xforms-datamodel-20000815, (August 2000)
- World Wide Web Consortium, Recommendation REC-xhtml-modularization-20010410, (April 2001)


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