APA Style
Bengert, Heike, Heitmann, Jan G., Wala, Michael. ().
Secret Intelligence in the Twentieth Century .
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Chicago Style
Bengert, Heike, Heitmann, Jan G., Wala, Michael.
Secret Intelligence in the Twentieth Century.
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,
.
Text.
MLA Style
Bengert, Heike, Heitmann, Jan G., Wala, Michael.
Secret Intelligence in the Twentieth Century.
:
,
.
Text.
Turabian Style
Bengert, Heike, Heitmann, Jan G., Wala, Michael.
Secret Intelligence in the Twentieth Century.
:
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.
Print.