Glass, C. (2018). They fought alone: The true story of the Starr Brothers, British secret agents in Nazi-occupied France. Penguin Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGlass, Charles. They Fought Alone: The True Story of the Starr Brothers, British Secret Agents in Nazi-occupied France. New York: Penguin Press, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGlass, Charles. They Fought Alone: The True Story of the Starr Brothers, British Secret Agents in Nazi-occupied France. Penguin Press, 2018.
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