Lua APA (7ú heag.)

Ritter, J. (2001). U - V. Schwabe.

Lua i Stíl Chicago (17ú heag.)

Ritter, Joachim. U - V. Basel: Schwabe, 2001.

Lua MLA (8ú heag.)

Ritter, Joachim. U - V. Schwabe, 2001.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.