APA (7th ed.) Citation

Easton, D. (1960). The political system: An inquiry into the state of political science. Knopf.

Chicago Style (17th ed.) Citation

Easton, David. The Political System: An Inquiry into the State of Political Science. New York: Knopf, 1960.

MLA (9th ed.) Citation

Easton, David. The Political System: An Inquiry into the State of Political Science. Knopf, 1960.

Warning: These citations may not always be 100% accurate.