"1.2 Normative References reads in part:

• • • • • 
          SOAP M Gudgin, M Hadley, N Mendelsohn, J Moreau, H Nielsen, A Karmarkar, Y Lafon, W3C SOAP Version 1.2 (Second Edition), W3C Recommendation 27 April 2007

SOAP is a multi-part standard and the citation given isn't clear if all or part of the SOAP standard is being cited as a normative reference.

The correct citation for SOAP Version 1.2 Part 0: (Second Edition) reads:

• • • • • SOAP12-PART0
          SOAP Version 1.2 Part 0: Primer (Second Edition) , N. Mitra, Y. Lafon, Editors, W3C Recommendation, 27 April 2007, http://www.w3.org/TR/2007/REC-soap12-part0-20070427/ . Latest version available at http://www.w3.org/TR/soap12-part0/ .

As per the W3C bibliography generator: http://www.w3.org/2002/01/tr-automation/tr-biblio-ui"