Levi Strauss, D., & Sauerländer, K. (2012). In Case Something Different Happens in the Future: Joseph Beuys and 9/11. Hatje Cantz Verlag.
Lua i Stíl Chicago (17ú heag.)Levi Strauss, David, agus Katrin Sauerländer. In Case Something Different Happens in the Future: Joseph Beuys and 9/11. Ostfildern: Hatje Cantz Verlag, 2012.
Lua MLA (8ú heag.)Levi Strauss, David, agus Katrin Sauerländer. In Case Something Different Happens in the Future: Joseph Beuys and 9/11. Hatje Cantz Verlag, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.