Victor, W. (1951). Lessing. Thüringer Volksverlag.
Lua i Stíl Chicago (17ú heag.)Victor, Walther. Lessing. Erfurt: Thüringer Volksverlag, 1951.
Lua MLA (8ú heag.)Victor, Walther. Lessing. Thüringer Volksverlag, 1951.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.