Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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