Hickok, R. (1989). Exploring music (4th ed.). Wm. C. Brown Publishers.
Lua i Stíl Chicago (17ú heag.)Hickok, Robert. Exploring Music. 4th ed. Dubuque, Iowa: Wm. C. Brown Publishers, 1989.
Lua MLA (9ú heag.)Hickok, Robert. Exploring Music. 4th ed. Wm. C. Brown Publishers, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.