Snowden, E. J. (2019). Permanent record (First edition.). Metropolitan Books, Henry Holt and Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSnowden, Edward J. Permanent Record. First edition. New York: Metropolitan Books, Henry Holt and Company, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSnowden, Edward J. Permanent Record. First edition. Metropolitan Books, Henry Holt and Company, 2019.
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