Pickles, D. M. (1951). Introduction to politics. Methuen.
Cita Chicago (17th ed.)Pickles, Dorthy M. Introduction to Politics. London: Methuen, 1951.
Cita MLA (9th ed.)Pickles, Dorthy M. Introduction to Politics. Methuen, 1951.
Atenció: Aquestes cites poden no estar 100% correctes.