La tartamudez en el mundo...

Stuttering Foundation of America 

National Stuttering Association (USA)

International Fluency Association (IFA)

ISA International Stuttering Association-

National Stuttering Project - Los Angeles-

ELSA - EUROPEAN LEAGUE OF STUTTERING ASSOCIATIONS-

Canadian Association for People Who Stutter (CAPS)-

The Australian Stuttering Research Centre

The Stuttering Information Center of Denmark-

Medem: Medical Library: Stuttering-

British Stammering Association