Pachnicke, P. (1991). John Heartfield.
Lua i Stíl Chicago (17ú heag.)Pachnicke, Peter. John Heartfield. Köln, 1991.
Lua MLA (8ú heag.)Pachnicke, Peter. John Heartfield. 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.