Cita APA (7th ed.)

Sandburg, C. (1960). Abraham Lincoln: The prairie years and the war years. Dell Publishing.

Cita Chicago (17th ed.)

Sandburg, Carl. Abraham Lincoln: The Prairie Years and the War Years. Nueva York: Dell Publishing, 1960.

Cita MLA (9th ed.)

Sandburg, Carl. Abraham Lincoln: The Prairie Years and the War Years. Dell Publishing, 1960.