1. The development of speech;Menyuk,1972
2. Speech correction in the schools;Eisenson,1971
3. Speech pathology: an applied behavioral science;Perkins,1971
4. Certain language skills in children, their development and interrelationships;Templin,1957
5. Genetic development of articulation of consonant sounds in speech;Poole;Elem Eng Rev,1934