Try searching on 'isdn configuration guide' on CCO. You might also want to add your IOS release to the search string. Conversely, go to this link and select your IOS. Then narrow it down to ISDN and/or dial solutions.
http://www.cisco.com/univercd/cc/td/doc/product/software/
As for a book, Cisco Press has several that address the issue. Perhaps "Building Cisco Remote Access Networks" might be a good one (I own it but haven't gotten around to reading it yet).
Check out bookpool.com for about the best prices anywhere.