Fox, K. A. (1974). Social indicators and social theory: Elements of an operational system. John Wiley.
Citazione stile Chigago Style (17a edizione)Fox, Karl A. Social Indicators and Social Theory: Elements of an Operational System. Nueva York: John Wiley, 1974.
Citatione MLA (9a ed.)Fox, Karl A. Social Indicators and Social Theory: Elements of an Operational System. John Wiley, 1974.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.