1. A Handbook on Stuttering;Bloodstein,1960
2. The speech pathologist looks at the mentally deficient child;Gens;Training School Bull.,1951
3. The incidence of stuttering in a group of mongoloids;Gottsleben;Training School Bull.,1955
4. Diagnostic Methods in Speech Pathology;Johnson,1963
5. Stuttering patterns observed in a sample of mentally retarded individuals;Lerman;Training School Bull.,1965