Não informado. (1981). Sig security, audit and control review. Association for Computing Machinery.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Sig Security, Audit and Control Review. New York: Association for Computing Machinery, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Sig Security, Audit and Control Review. Association for Computing Machinery, 1981.
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