Corwin, E. S. (1957). The President, office and powers: History and analysis of practice and opinion (Forth revised edition.). New York University Press.

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.

Corwin, Edward S. The President, Office and Powers: History and Analysis of Practice and Opinion. Forth revised edition. New York University Press, 1957.