Rolfs, R. W. (1996). The sorcerer's apprentice: The life of Franz von Papen. University Press of America.
Dyfyniad Arddull ChicagoRolfs, Richard W. The Sorcerer's Apprentice: The Life of Franz Von Papen. Lanham: University Press of America, 1996.
Dyfyniad MLARolfs, Richard W. The Sorcerer's Apprentice: The Life of Franz Von Papen. University Press of America, 1996.
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