Harder, J. (2010). Alpha. directions. Carlsen.
Lua i Stíl Chicago (17ú heag.)Harder, Jens. Alpha. Directions. Hamburg: Carlsen, 2010.
Lua MLA (8ú heag.)Harder, Jens. Alpha. Directions. Carlsen, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.