Hagen, E. E. (1964). On the theory of social change: How economic growth begins. Tavistock.
Citazione stile Chigago Style (17a edizione)Hagen, Everett E. On the Theory of Social Change: How Economic Growth Begins. Londres: Tavistock, 1964.
Citatione MLA (9a ed.)Hagen, Everett E. On the Theory of Social Change: How Economic Growth Begins. Tavistock, 1964.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.