Collas, W. v. (2001). European Music Directory 2001. Saur.
Lua i Stíl Chicago (17ú heag.)Collas, Wolfgang von. European Music Directory 2001. München: Saur, 2001.
Lua MLA (8ú heag.)Collas, Wolfgang von. European Music Directory 2001. Saur, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.