Corwin, E. S. (1957). The President, office and powers: History and analysis of practice and opinion (Forth revised edition.). New York University Press.
Chicago-referens (17:e uppl.)Corwin, Edward S. The President, Office and Powers: History and Analysis of Practice and Opinion. Forth revised edition. New York: New York University Press, 1957.
MLA-referens (8:e uppl.)Corwin, Edward S. The President, Office and Powers: History and Analysis of Practice and Opinion. Forth revised edition. New York University Press, 1957.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.