Операција Валкира — разлика између измена

* {{Cite book | ref = harv| last = Fest| first = Joachim| title = Plotting Hitler's Death: The Story of German Resistance| url = http://books.google.com/books?id=MCWrQgAACAAJ| year = 1996| publisher = Henry Holt and Company| isbn = 978-0-8050-4213-9| pages = 219}}

* {{Cite book | ref = harv | last = Butler| first = Rupert| title = The Gestapo: A History of Hitler's Secret Police 1933-45| url = http://books.google.com/books?id=zIqWPwAACAAJ| year = 2004| publisher = Amber Books| location = London| isbn = 978-1-904687-06-1}}