APA (7th ed.) Citation

Guelzo, A. C. (2009). Abraham Lincoln as a man of ideas. Southern Illinois University Press.

Chicago Style (17th ed.) Citation

Guelzo, Allen C. Abraham Lincoln as a Man of Ideas. Carbondale: Southern Illinois University Press, 2009.

MLA (9th ed.) Citation

Guelzo, Allen C. Abraham Lincoln as a Man of Ideas. Southern Illinois University Press, 2009.