Fath, R. (1989). Reclams Opernlexikon. Reclam.
Lua i Stíl Chicago (17ú heag.)Fath, Rolf. Reclams Opernlexikon. Stuttgart: Reclam, 1989.
Lua MLA (8ú heag.)Fath, Rolf. Reclams Opernlexikon. Reclam, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.