Le Carré, J. (2013). The spy who came in from the cold (50th anniversary edition.). Penguin Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLe Carré, John. The Spy Who Came in from the Cold. 50th anniversary edition. New York, New York: Penguin Books, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLe Carré, John. The Spy Who Came in from the Cold. 50th anniversary edition. Penguin Books, 2013.
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