Cox, R. G. (1996). The singer's manual of German and French diction. Schirmer Books.
Lua i Stíl Chicago (17ú heag.)Cox, Richard G. The Singer's Manual of German and French Diction. New York: Schirmer Books, 1996.
Lua MLA (9ú heag.)Cox, Richard G. The Singer's Manual of German and French Diction. Schirmer Books, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.