Citazione Stile APA (7a Edizione)

Easton, D. (1971). The political system: An inquiry into the state of political science (2d ed.). Knopf.

Citazione stile Chigago Style (17a edizione)

Easton, David. The Political System: An Inquiry into the State of Political Science. 2d ed. New York: Knopf, 1971.

Citatione MLA (8a ed.)

Easton, David. The Political System: An Inquiry into the State of Political Science. 2d ed. Knopf, 1971.