Gates, R., Forrest, L. A., & Obert, K. (2013). The owner's manual to the voice: A guide for singers and other professional voice users. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Gates, Rachael, L. Arick Forrest, agus Kerrie Obert. The Owner's Manual to the Voice: A Guide for Singers and Other Professional Voice Users. Oxford ; New York: Oxford University Press, 2013.
Lua MLA (9ú heag.)Gates, Rachael, et al. The Owner's Manual to the Voice: A Guide for Singers and Other Professional Voice Users. Oxford University Press, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.