Easton, D. (1965). A systems analysis of political life. John Wiley.
Citazione stile Chigago Style (17a edizione)Easton, David. A Systems Analysis of Political Life. Nueva York: John Wiley, 1965.
Citatione MLA (9a ed.)Easton, David. A Systems Analysis of Political Life. John Wiley, 1965.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.