Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.