APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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