Cita APA (7th ed.)
Hirsch, D., & Van Haften, D. (2010). Abraham Lincoln and the structure of reason. Savas Beatie.
Cita Chicago (17th ed.)
Hirsch, David, i Dan Van Haften. Abraham Lincoln and the Structure of Reason. New York: Savas Beatie, 2010.
Cita MLA (9th ed.)
Hirsch, David, i Dan Van Haften. Abraham Lincoln and the Structure of Reason. Savas Beatie, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.