Cita APA (7th ed.)
Sandburg, C. Abraham Lincoln: The Prairie Years and the War Years. Franklin Library.
Cita Chicago (17th ed.)
Sandburg, Carl. Abraham Lincoln: The Prairie Years and the War Years. Pensilvania, EUA: Franklin Library.
Cita MLA (9th ed.)
Sandburg, Carl. Abraham Lincoln: The Prairie Years and the War Years. Franklin Library.
Atenció: Aquestes cites poden no estar 100% correctes.