Cita APA (7th ed.)

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.