Flagge, I., & Roth, P. (2000). Main Tower. Wasmuth.
Lua i Stíl Chicago (17ú heag.)Flagge, Ingeborg, agus Petra Roth. Main Tower. Tübingen [u.a.]: Wasmuth, 2000.
Lua MLA (8ú heag.)Flagge, Ingeborg, agus Petra Roth. Main Tower. Wasmuth, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.