Smith, W. S., & Chipman, M. (2007). The naked voice: A wholistic approach to singing. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Smith, W. Stephen, agus Michael Chipman. The Naked Voice: A Wholistic Approach to Singing. Oxford ; New York: Oxford University Press, 2007.
Lua MLA (9ú heag.)Smith, W. Stephen, agus Michael Chipman. The Naked Voice: A Wholistic Approach to Singing. Oxford University Press, 2007.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.