Cita APA (7a ed.)
Sandburg, C. Abraham Lincoln: The Prairie Years and the War Years. Franklin Library.
Cita estilo Chicago (17a ed.)
Sandburg, Carl. Abraham Lincoln: The Prairie Years and the War Years. Pensilvania, EUA: Franklin Library.
Cita MLA (9a ed.)
Sandburg, Carl. Abraham Lincoln: The Prairie Years and the War Years. Franklin Library.
Precaución: Estas citas no son 100% exactas.