The New Testament Documents: Are They Reliable? by F. F. Bruce. History and Christanity, John Warwick Montgomery. Try those for a start.
I’d suggest Michael Kruger’s Canon Revisited: Establishing the Origins and Authority of the New Testament Books.
http://books.google.com/books?id=eXHWBq27Ga4C&pg=PT876&dq=The+New+Testament+Documents:+Are+They+Reliable?+by+F.+F.+Bruce.+History+and+Christianity,+John+Warwick+Montgomery&hl=en&sa=X&ei=UGgfVL-8AsmTsQTfzoLIBg&ved=0CDEQ6AEwAw#v=onepage&q=The%20New%20Testament%20Documents%3A%20Are%20They%20Reliable%3F%20by%20F.%20F.%20Bruce.%20History%20and%20Christianity%2C%20John%20Warwick%20Montgomery&f=false