Cita APA (7a ed.)
Whiting, C. Gehlen: Master Spy of the Century. Ballantine Books.
Cita estilo Chicago (17a ed.)
Whiting, Charles. Gehlen: Master Spy of the Century. Nueva York, EUA: Ballantine Books.
Cita MLA (9a ed.)
Whiting, Charles. Gehlen: Master Spy of the Century. Ballantine Books.
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