1. Singing: The Mechanism and the Technic;Vennard,1967
2. Singing: The Physical Nature of the Vocal Organ;Husler,1976
3. Discover Your Voice: How to develop healthy voice habits;Brown,1996
4. Breathing, Speech, and Song;Proctor,1980
5. Professional Voice: The Science and Art of Clinical Care;Sataloff,1997