O'Connor, H. (1937). The Guggenheims: The making of an American dynasty / by Harvey O'Connor. Covici, Friede.
Cita Chicago (17th ed.)O'Connor, Harvey. The Guggenheims: The Making of an American Dynasty / by Harvey O'Connor. New York: Covici, Friede, 1937.
Cita MLA (8th ed.)O'Connor, Harvey. The Guggenheims: The Making of an American Dynasty / by Harvey O'Connor. Covici, Friede, 1937.
Atenció: Aquestes cites poden no estar 100% correctes.