APA (7th ed.) Citation

Barker, E. S. (1951). Principles of social & political theory. Clarendon Press.

Chicago Style (17th ed.) Citation

Barker, Ernest Sir. Principles of Social & Political Theory. Oxford: Clarendon Press, 1951.

MLA (9th ed.) Citation

Barker, Ernest Sir. Principles of Social & Political Theory. Clarendon Press, 1951.