Cita APA (7th ed.)

Fox, K. A. (1974). Social indicators and social theory: Elements of an operational system. John Wiley.

Cita Chicago (17th ed.)

Fox, Karl A. Social Indicators and Social Theory: Elements of an Operational System. Nueva York: John Wiley, 1974.

Cita MLA (9th ed.)

Fox, Karl A. Social Indicators and Social Theory: Elements of an Operational System. John Wiley, 1974.