Bullenbeisse
Boxer Pal
Its not a book specifically about Boxers. Its about German Shepherds. But it has a lot of great insight about how to raise puppies.
I highly recommend.

I highly recommend.
If it is the new and revised edition then I would agree. There was much controversy surrounding the original version. Some of the practices they utilized were not on par with positive training. They have since back tracked, admitted the error of their ways and changed their training methods in the revised edition.