Gringmuth, W., & Rössing-Winkler, R. (1964). Spreewald. Brockhaus.
Lua i Stíl Chicago (17ú heag.)Gringmuth, Werner, agus Renate Rössing-Winkler. Spreewald. Leipzig: Brockhaus, 1964.
Lua MLA (8ú heag.)Gringmuth, Werner, agus Renate Rössing-Winkler. Spreewald. Brockhaus, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.