Lua APA (7ú heag.)

Ritter, J. (1974). G - H. Schwabe.

Lua i Stíl Chicago (17ú heag.)

Ritter, Joachim. G - H. Basel: Schwabe, 1974.

Lua MLA (8ú heag.)

Ritter, Joachim. G - H. Schwabe, 1974.

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