Cita APA (7th ed.)
Hagen, E. E. (1962). On the theory of social change: How economic growth begins. Vakils, Feffer and Simons Private.
Cita Chicago (17th ed.)
Hagen, Everett E. On the Theory of Social Change: How Economic Growth Begins. Bombay: Vakils, Feffer and Simons Private, 1962.
Cita MLA (9th ed.)
Hagen, Everett E. On the Theory of Social Change: How Economic Growth Begins. Vakils, Feffer and Simons Private, 1962.
Atenció: Aquestes cites poden no estar 100% correctes.