APA (7th ed.) Zitazioa

Easton, D. (1965). A systems analysis of political life. John Wiley.

Chicago Style (17th ed.) Zitazioa

Easton, David. A Systems Analysis of Political Life. Nueva York: John Wiley, 1965.

MLA (9th ed.) Zitazioa

Easton, David. A Systems Analysis of Political Life. John Wiley, 1965.