* {{cite book | last=Schiller | first=Dieter | title=Der Traum von Hitlers Sturz | publisher=Peter Lang | publication-place=Frankfurt am Main ; New York | date=2010 | isbn=978-3-631-58755-3 | oclc=668235336 | language=de}}
<ref name="o660">{{cite book | last=Schiller | first=Dieter | title=Der Traum von Hitlers Sturz | publisher=Peter Lang | publication-place=Frankfurt am Main ; New York | date=2010 | isbn=978-3-631-58755-3 | oclc=668235336 | language=de | page=}}</ref>