Brenkert, G. G. (1991). Political freedom. Routledge.
Cita Chicago Style (17a ed.)Brenkert, George G. Political Freedom. London: Routledge, 1991.
Cita MLA (9a ed.)Brenkert, George G. Political Freedom. Routledge, 1991.
Precaución: Estas citas no son 100% exactas.