McKinney, J. C. (2005). The diagnosis & correction of vocal faults: A manual for teachers of singing and for choir directors (Reissue with acc. compact disc.). Waveland Press.
Lua i Stíl Chicago (17ú heag.)McKinney, James C. The Diagnosis & Correction of Vocal Faults: A Manual for Teachers of Singing and for Choir Directors. Reissue with acc. compact disc. Long Grove, Il.: Waveland Press, 2005.
Lua MLA (9ú heag.)McKinney, James C. The Diagnosis & Correction of Vocal Faults: A Manual for Teachers of Singing and for Choir Directors. Reissue with acc. compact disc. Waveland Press, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.