Graham, T., & Hansen, K. A. (2007). Spy satellites: And other intelligence technologies that changed history. University of Washington Press.
Chicago-čujuhus (17. p.)Graham, Thomas, juo Keith A. Hansen. Spy Satellites: And Other Intelligence Technologies That Changed History. Seattle: University of Washington Press, 2007.
MLA-čujuhus (9. p.)Graham, Thomas, juo Keith A. Hansen. Spy Satellites: And Other Intelligence Technologies That Changed History. University of Washington Press, 2007.
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