APA ציטוט

Easton, D. (1971). Political system: An inquiry into the state of political science (2.). Scientific book agency.

Chicago Edition Citation

Easton, David. Political System: An Inquiry into the State of Political Science. 2. Calcutta: Scientific book agency, 1971.

ציטוט MLA

Easton, David. Political System: An Inquiry into the State of Political Science. 2. Scientific book agency, 1971.