Birling, H. (1953). Burgen in Bayern: Hans Birling. Neuner.
Lua i Stíl Chicago (17ú heag.)Birling, Hans. Burgen in Bayern: Hans Birling. München: Neuner, 1953.
Lua MLA (8ú heag.)Birling, Hans. Burgen in Bayern: Hans Birling. Neuner, 1953.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.