Não informado. (2007). Annual report of the Federal Security Agency. Government Printing Office.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Annual Report of the Federal Security Agency. Washington: Government Printing Office, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Annual Report of the Federal Security Agency. Government Printing Office, 2007.
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