Crook, E. a. (1976). Music: Materials for teaching. Silver Burdett Company.
Lua i Stíl Chicago (17ú heag.)Crook, Elizabeth...[et al]. Music: Materials for Teaching. Morristown, NJ: Silver Burdett Company, 1976.
Lua MLA (9ú heag.)Crook, Elizabeth...[et al]. Music: Materials for Teaching. Silver Burdett Company, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.