Nungesser, M., & Roloff, S. (2001). When 6 is 9: By Stefan Roloff.
Lua i Stíl Chicago (17ú heag.)Nungesser, Michael, agus Stefan Roloff. When 6 Is 9: By Stefan Roloff. Berlin, 2001.
Lua MLA (8ú heag.)Nungesser, Michael, agus Stefan Roloff. When 6 Is 9: By Stefan Roloff. 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.