APA (7th ed.) Citation

Parsons, T. (1964). The social system (1st Free Press pbk. ed.). Free Press.

Chicago Style (17th ed.) Citation

Parsons, Talcott. The Social System. 1st Free Press pbk. ed. New York: Free Press, 1964.

MLA (9th ed.) Citation

Parsons, Talcott. The Social System. 1st Free Press pbk. ed. Free Press, 1964.