Literature,

Mary Brytowski, The Glen of Imaal Terrier

Ronald Delaney, Hounds and Terriers

John F. Gordon, An Illustrated Guide to Some Rare and Unusual Dog Breeds

Tom Horner, Terriers of the World

Clifford L.B. Hubbard, Dogs in Britain

The Kennel Club's Illustrated Breed Standarts

Richard Marples, Encyclopedia of the Dog

D. Brian Plummer, The Working Terrier

Michael Shaw, The Modern Working Terrier

J.W. Smits and J.M. Smits-van Duyn, De Terriers

Toepoels Hondenencyclopedie