(1996). Singer's world: Book 4 : for high voice. Trinity College London.
Lua i Stíl Chicago (17ú heag.)Singer's World: Book 4 : For High Voice. London: Trinity College London, 1996.
Lua MLA (9ú heag.)Singer's World: Book 4 : For High Voice. Trinity College London, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.