Easton, D. (1965). A systems analysis of political life. Wiley.
Cita Chicago (17th ed.)Easton, David. A Systems Analysis of Political Life. New York: Wiley, 1965.
Cita MLA (8th ed.)Easton, David. A Systems Analysis of Political Life. Wiley, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.