O'Donnell, P. K. (2018). The unknowns: The untold story of America's unknown solider and WWI's most decorated heroes who brought him home (First edition, First Grove Atlantic hardcover edition.). Atlantic Monthly Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रO'Donnell, Patrick K. The Unknowns: The Untold Story of America's Unknown Solider and WWI's Most Decorated Heroes Who Brought Him Home. First edition, First Grove Atlantic hardcover edition. New York: Atlantic Monthly Press, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रO'Donnell, Patrick K. The Unknowns: The Untold Story of America's Unknown Solider and WWI's Most Decorated Heroes Who Brought Him Home. First edition, First Grove Atlantic hardcover edition. Atlantic Monthly Press, 2018.
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