APA (7th ed.) Citation

Easton, D. (1971). The political system: An inquiry into the state of political science. Scientific Book Agency.

Chicago Style (17th ed.) Citation

Easton, David. The Political System: An Inquiry into the State of Political Science. Scientific Book Agency, 1971.

MLA (9th ed.) Citation

Easton, David. The Political System: An Inquiry into the State of Political Science. Scientific Book Agency, 1971.

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