APA (7th ed.) Citation

BARKER, E. (1951). Principles social and political theory. O.U.P.

Chicago Style (17th ed.) Citation

BARKER, Ernest. Principles Social and Political Theory. London: O.U.P, 1951.

MLA (9th ed.) Citation

BARKER, Ernest. Principles Social and Political Theory. O.U.P, 1951.