APA (7th ed.) Citation

Hagen, E. E. (1962). On the theory of social change. Feffer and Simons.

Chicago Style (17th ed.) Citation

Hagen, Everett E. On the Theory of Social Change. Bombay: Feffer and Simons, 1962.

MLA (9th ed.) Citation

Hagen, Everett E. On the Theory of Social Change. Feffer and Simons, 1962.