Citazione Stile APA (7a Edizione)

BARKER, E. (1967). Principles of social and political theory. Oxford University Press.

Citazione stile Chigago Style (17a edizione)

BARKER, Ernest. Principles of Social and Political Theory. London: Oxford University Press, 1967.

Citatione MLA (9a ed.)

BARKER, Ernest. Principles of Social and Political Theory. Oxford University Press, 1967.