Hospers, J. (1971). Libertarianism, A political philosophy for tomorrow (Primera edición.). Reason Press.
Dyfyniad Arddull ChicagoHospers, John. Libertarianism, A Political Philosophy for Tomorrow. Primera edición. Santa Bárbara: Reason Press, 1971.
Dyfyniad MLAHospers, John. Libertarianism, A Political Philosophy for Tomorrow. Primera edición. Reason Press, 1971.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.