This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Addressing a public posting directly to me?!??
I guess no one else is crazy enough to undertake a venture like writing a book on a web service certification.
Regretfully, I have only been this crazy once (310-230, SCDJWS/OCPJWSD 5) and not for the Java EE 6 version.
Sorry, but I cannot recommend any other book, mainly because I have been busy learning other things since.
However, if you use material for the previous version and add some material covering the new topics (mainly RESTful web services if I understand correctly), then you should be able to pass the exam.