Graubard, S. R. (2009). The Presidents: The transformation of the American presidency from Theodore Roosevelt to Barack Obama (Reissued with new material, new ed.). Penguin Books.
Chicago-Zitierstil (17. Ausg.)Graubard, Stephen Richards. The Presidents: The Transformation of the American Presidency from Theodore Roosevelt to Barack Obama. Reissued with new material, new ed. London: Penguin Books, 2009.
MLA-Zitierstil (9. Ausg.)Graubard, Stephen Richards. The Presidents: The Transformation of the American Presidency from Theodore Roosevelt to Barack Obama. Reissued with new material, new ed. Penguin Books, 2009.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.