Arnold, I. N. (1994). The life of Abraham Lincoln (4th ed.). University of Nebraska Press.
Lua i Stíl Chicago (17ú heag.)Arnold, Isaac Newton. The Life of Abraham Lincoln. 4th ed. Lincoln: University of Nebraska Press, 1994.
Lua MLA (9ú heag.)Arnold, Isaac Newton. The Life of Abraham Lincoln. 4th ed. University of Nebraska Press, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.