APA (7th ed.) Citation

Parsons, T. (1952). The social system. Tavistock Pub.

Chicago Style (17th ed.) Citation

Parsons, Talcott. The Social System. [London]: Tavistock Pub, 1952.

MLA (9th ed.) Citation

Parsons, Talcott. The Social System. Tavistock Pub, 1952.