Ullmann, W. (1998). A tale of two cultures. Out of the Third Reich : refugee historians in post-war Britain.
Chicago-referens (17:e uppl.)Ullmann, Walter. "A Tale of Two Cultures." Out of the Third Reich : Refugee Historians in Post-war Britain 1998.
MLA-referens (8:e uppl.)Ullmann, Walter. "A Tale of Two Cultures." Out of the Third Reich : Refugee Historians in Post-war Britain, 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.