Lua APA (7ú heag.)

Opitz, H. (2004). International Music Directory 2004/2005. Saur.

Lua i Stíl Chicago (17ú heag.)

Opitz, Helmut. International Music Directory 2004/2005. München: Saur, 2004.

Lua MLA (8ú heag.)

Opitz, Helmut. International Music Directory 2004/2005. Saur, 2004.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.