Resources Used
| Brown, Oren L. (1999). Maintaining Vocal Health. Teaching Music, Vol. 6, Issue 5. Retrieved November 22, 2004 from Academic Search Elite database. |
| Daugherty, James F. (1999). Spacing, Formation, and Choral Sound: Preferences and Perceptions of Auditors and Choristers. Journal of Research in Music Education, 47 no.3, 224-238. Retrieved November 22, 2004 from Educational Resources Information Center database. |
Erwin, J., Edwards, K., Kerchner, J., and Knight, J. (2003). Prelude to Music Education. Upper Saddle River , NJ : Prentice Hall. |
| The Diagnosis and Correction of Vocal Faults : A Manual for Teachers of Singing and for Choir Directors by James C. McKinney |