Gray, C. (2004). The history of music. Kegan Paul Limited.
Lua i Stíl Chicago (17ú heag.)Gray, Cecil. The History of Music. London: Kegan Paul Limited, 2004.
Lua MLA (9ú heag.)Gray, Cecil. The History of Music. Kegan Paul Limited, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.