Cita APA (7th ed.)

Gunther, J. (1950). Roosevelt in retrospect: A profile in history / John Gunther. Harper.

Cita Chicago (17th ed.)

Gunther, John. Roosevelt in Retrospect: A Profile in History / John Gunther. New York: Harper, 1950.

Cita MLA (8th ed.)

Gunther, John. Roosevelt in Retrospect: A Profile in History / John Gunther. Harper, 1950.