Brusberg, F. (1990). The development of art and culture in the German Democratic Republic: Emphasis on painting with examples.
Lua i Stíl Chicago (17ú heag.)Brusberg, Felix. The Development of Art and Culture in the German Democratic Republic: Emphasis on Painting with Examples. London, 1990.
Lua MLA (8ú heag.)Brusberg, Felix. The Development of Art and Culture in the German Democratic Republic: Emphasis on Painting with Examples. 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.