APA

Corwin E. S., . (1948). The President, office and powers: 1787-1948; history and analysis of practice and opinion. New York: New York University Press.

Chicago

Corwin Edward Samuel, . 1948. The President, office and powers: 1787-1948; history and analysis of practice and opinion. New York: New York University Press.

Harvard

Corwin E. S., . (1948). The President, office and powers: 1787-1948; history and analysis of practice and opinion. New York: New York University Press.

MLA

Corwin Edward Samuel, . The President, office and powers: 1787-1948; history and analysis of practice and opinion. New York: New York University Press. 1948.