Offley, E., & Williams, J. (2011). Turning the tide: How a small band of Allied sailors defeated the U-boats and won the Battle of the Atlantic. Basic Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOffley, Edward, और Jeff Williams. Turning the Tide: How a Small Band of Allied Sailors Defeated the U-boats and Won the Battle of the Atlantic. New York, New York ; Philadelphia, Pennsylvania: Basic Books, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOffley, Edward, और Jeff Williams. Turning the Tide: How a Small Band of Allied Sailors Defeated the U-boats and Won the Battle of the Atlantic. Basic Books, 2011.
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