There is a really excellent book available for FREE download at:
which is called "Was the New Testament Really Written in Greek?". This is highly recommended reading to all NT students/scholars, whatever your views on the subject are.
With permission from the author (hence why it is hosted on his web site), I have turned this into a new BibleWorks User Module, which is fully linked to the text of the NT, and appears in the Resources Tab like other Modules.
You can download the new Module from the web page: