Cita APA (7th ed.)

Easton, D. (1979). A framework for political analysis. University of Chicago Pr..

Cita Chicago (17th ed.)

Easton, David. A Framework for Political Analysis. Chicago: University of Chicago Pr., 1979.

Cita MLA (9th ed.)

Easton, David. A Framework for Political Analysis. University of Chicago Pr., 1979.