Plamenatz, J. P. (1968). Consent, freedom and political obligation (2d ed.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Plamenatz, John Petrov. Consent, Freedom and Political Obligation. 2d ed. London: Oxford University Press, 1968.
Lua MLA (9ú heag.)Plamenatz, John Petrov. Consent, Freedom and Political Obligation. 2d ed. Oxford University Press, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.