Cita APA (7a ed.)

Gregg, S. (2003). On ordered liberty: A treatise on the free society. Lexington Books.

Cita Chicago Style (17a ed.)

Gregg, Samuel. On Ordered Liberty: A Treatise on the Free Society. Lanhem, [etc.]: Lexington Books, 2003.

Cita MLA (9a ed.)

Gregg, Samuel. On Ordered Liberty: A Treatise on the Free Society. Lexington Books, 2003.