O'Connor, H. (1937). The Guggenheims: The making of an American dynasty / by Harvey O'Connor. Covici, Friede.
Citazione stile Chigago Style (17a edizione)O'Connor, Harvey. The Guggenheims: The Making of an American Dynasty / by Harvey O'Connor. New York: Covici, Friede, 1937.
Citatione MLA (8a ed.)O'Connor, Harvey. The Guggenheims: The Making of an American Dynasty / by Harvey O'Connor. Covici, Friede, 1937.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.