Petersen, J. (2009). Understanding Surveillance Technologies: Spy Devices, Privacy, History, & Applications, Revised and Expanded Second Edition. CRC Press.
Παραπομπή Chicago StylePetersen, J.K. Understanding Surveillance Technologies: Spy Devices, Privacy, History, & Applications, Revised and Expanded Second Edition. CRC Press, 2009.
Παραπομπή MLAPetersen, J.K. Understanding Surveillance Technologies: Spy Devices, Privacy, History, & Applications, Revised and Expanded Second Edition. CRC Press, 2009.
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