Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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