Cita APA (7th ed.)

Sandburg, C. (1939). Abraham Lincoln: The war years. Harcourt, Brace and World.

Cita Chicago (17th ed.)

Sandburg, Carl. Abraham Lincoln: The War Years. New York: Harcourt, Brace and World, 1939.

Cita MLA (9th ed.)

Sandburg, Carl. Abraham Lincoln: The War Years. Harcourt, Brace and World, 1939.