Vortmann, H. (2013). Discussion papers.
Lua i Stíl Chicago (17ú heag.)Vortmann, Heinz. Discussion Papers. Berlin, 2013.
Lua MLA (8ú heag.)Vortmann, Heinz. Discussion Papers. 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.