1. The Voice and Voice Therapy;Boone,1994
2. Singing: The Mechanism and the Technic;Vennard,1967
3. English, French, German, and Italian Techniques of Singing: A Study in National Tonal Preferences and How They Relate to Functional Efficiency;Miller,1977
4. The Singer and the Voice: Vocal Technique for Singers;Rose,1971
5. The Use and Training of the Human Voice: A Practical Approach to Speech and Voice Dynamics;Lessac,1967