Possible Duplicate:
WCF Book Recommendation
Which book is best for WCF technology .
Possible Duplicate:
WCF Book Recommendation
Which book is best for WCF technology .
Depending on your level, one of these should work: http://www.apress.com/book/search?searchterm=WCF+4&act=search&submit.x=0&submit.y=0
I love Apress, they are a good company; I have not read them, so I can't vouch for their contents, but they usually do no wrong. Wrox has good books too.