Trevor: The classic work on this subject is Christianity and Liberalism by J. 
Gresham Machen.

Soli Deo Gloria,

John T. "Jack" Jeffery

> Does anyone know of any books dealing with liberalism?  A liberal has drawn 
> near to a vulnerable Christian girl we know.  We want to look again at some 
> of the issues that are  invovled as it has been along time since I looked at 
> liberalism  in any depth.