Ballantyne, I. (2019). Undersea warriors: The untold history of the Royal Navy's secret service (First Pegasus Books hardcover edition.). Pegasus Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBallantyne, Iain. Undersea Warriors: The Untold History of the Royal Navy's Secret Service. First Pegasus Books hardcover edition. New York: Pegasus Books, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBallantyne, Iain. Undersea Warriors: The Untold History of the Royal Navy's Secret Service. First Pegasus Books hardcover edition. Pegasus Books, 2019.
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