Giles, P. (1994). The history and technique of the counter-tenor: A study of the male high voice family. Scolar Press.
Lua i Stíl Chicago (17ú heag.)Giles, Peter. The History and Technique of the Counter-tenor: A Study of the Male High Voice Family. Hants, Eng: Scolar Press, 1994.
Lua MLA (9ú heag.)Giles, Peter. The History and Technique of the Counter-tenor: A Study of the Male High Voice Family. Scolar Press, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.