1. Spectrographic study of fluent and stuttered speech;Allen,1975
2. Studies of nonfluency in the speech of preschool children;Branscom,1955
3. Repetitions and prolongations in the speech of stuttering and nonstuttering children;Egland,1955
4. Stuttering in Children and Adults;Johnson,1955
5. Speech Handicapped School Children;Johnson,1956