Cita APA (7a ed.)
Sandburg, C. Abraham Lincoln: The prairie years and the years. Laurel edition.
Cita Chicago Style (17a ed.)
Sandburg, Carl. Abraham Lincoln: The Prairie Years and the Years. New York: Laurel edition.
Cita MLA (9a ed.)
Sandburg, Carl. Abraham Lincoln: The Prairie Years and the Years. Laurel edition.
Precaución: Estas citas no son 100% exactas.