APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Easton, David. A Systems Analysis of Political Life. New York: John Wiley & Sons, 1965.

MLA (8th ed.) Citation

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