Kerbs, D., & Uka, W. (1988). Willi Münzenberg. Edition Echolot.
Lua i Stíl Chicago (17ú heag.)Kerbs, Diethart, agus Walter Uka. Willi Münzenberg. Berlin: Edition Echolot, 1988.
Lua MLA (8ú heag.)Kerbs, Diethart, agus Walter Uka. Willi Münzenberg. Edition Echolot, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.