Cita APA (7th ed.)

Barzun, J. (1982). Lincoln's philosophic vision. Gettysburg College.

Cita Chicago (17th ed.)

Barzun, Jacques. Lincoln's Philosophic Vision. Gettysburg: Gettysburg College, 1982.

Cita MLA (9th ed.)

Barzun, Jacques. Lincoln's Philosophic Vision. Gettysburg College, 1982.