The Fox Terrier (The World of Dogs)
This guide to Fox Terriers covers both Wire Haired and Smooth Fox Terriers. They are very similar in character, both active and strong-willed breeds, but Smooth Fox Terriers are generally a little easier to live with, and tend to get on a little better with other dogs.
This is a very good guide to fox terriers which covers a lot of ground, from choosing a pup to general care, training and showing.