Plamenatz, J. P. (1968). Consent, freedom and political obligation (2nd ed.). Oxford university press.
Dyfyniad Arddull ChicagoPlamenatz, J P. Consent, Freedom and Political Obligation. 2nd ed. London: Oxford university press, 1968.
Dyfyniad MLAPlamenatz, J P. Consent, Freedom and Political Obligation. 2nd ed. Oxford university press, 1968.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.