O.o You can purchase it from here: http://www.amazon.com/Professional-A.../dp/0470041781
alternatively you can purchase a subscription to http://wrox.books24x7.com/partnerspecial.asp
which will give you access to a large portion of the Wrox Library.
Read this if you want to know how to get a correct reply for your question:
.: Wrox Technical Editor :.
Wrox Books 24 x 7