Stingel, R. (2006). Edition for Parkett: Rudolf Stingel : "Siegelring", 2006. Parkett.
Lua i Stíl Chicago (17ú heag.)Stingel, Rudolf. "Edition for Parkett: Rudolf Stingel : "Siegelring", 2006." Parkett 2006.
Lua MLA (8ú heag.)Stingel, Rudolf. "Edition for Parkett: Rudolf Stingel : "Siegelring", 2006." Parkett, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.