Mrusek, H. (1975). Burgen in Europa. Edition Leipzig.
Lua i Stíl Chicago (17ú heag.)Mrusek, Hans-Joachim. Burgen in Europa. Leipzig: Edition Leipzig, 1975.
Lua MLA (8ú heag.)Mrusek, Hans-Joachim. Burgen in Europa. Edition Leipzig, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.