Cita APA (7th ed.)

Hagen, E. E. (1962). On the theory of social change: How economic growth begins. Feffer & Simons.

Cita Chicago (17th ed.)

Hagen, Everett Einar. On the Theory of Social Change: How Economic Growth Begins. New York, NY: Feffer & Simons, 1962.

Cita MLA (9th ed.)

Hagen, Everett Einar. On the Theory of Social Change: How Economic Growth Begins. Feffer & Simons, 1962.