Bartle, J. A. (2003). Sound advice: Becoming a better children's choir conductor. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Bartle, Jean Ashworth. Sound Advice: Becoming a Better Children's Choir Conductor. Oxford ; New York: Oxford University Press, 2003.
Lua MLA (9ú heag.)Bartle, Jean Ashworth. Sound Advice: Becoming a Better Children's Choir Conductor. Oxford University Press, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.