Cita APA (7th ed.)
Barker, E. (1963). Principles of social and political theory.
Cita Chicago (17th ed.)
Barker, Ernest. Principles of Social and Political Theory. 1963.
Cita MLA (9th ed.)
Barker, Ernest. Principles of Social and Political Theory. 1963.
Atenció: Aquestes cites poden no estar 100% correctes.