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.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)O'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.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)O'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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