Hack, R. (2001). Hughes: The private diaries, memos and letters ; the definitive biography of the first American billionaire. New Millennium Press.
Chicago-Zitierstil (17. Ausg.)Hack, Richard. Hughes: The Private Diaries, Memos and Letters ; the Definitive Biography of the First American Billionaire. Beverly Hills: New Millennium Press, 2001.
MLA-Zitierstil (9. Ausg.)Hack, Richard. Hughes: The Private Diaries, Memos and Letters ; the Definitive Biography of the First American Billionaire. New Millennium Press, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.