Cita APA (7a ed.)

Machan, T. R. (2006). Libertarianism defended. Ashgate.

Cita Chicago Style (17a ed.)

Machan, Tibor R. Libertarianism Defended. Aldershot, Hants, England ; Burlington, VT: Ashgate, 2006.

Cita MLA (9a ed.)

Machan, Tibor R. Libertarianism Defended. Ashgate, 2006.