Cita APA (7th ed.)

Cumming, R. D. Human nature and history: A study of the development of liberal political thought. University of Chicago Press, 1969.

Cita Chicago (17th ed.)

Cumming, Robert Denoon. Human Nature and History: A Study of the Development of Liberal Political Thought. Chicago: University of Chicago Press, 1969.

Cita MLA (8th ed.)

Cumming, Robert Denoon. Human Nature and History: A Study of the Development of Liberal Political Thought. University of Chicago Press, 1969.