Cita APA (7th ed.)

Prewitt, K., & Verba, S. (1979). An introduction to American government (3rd ed.). Harper & Row.

Cita Chicago (17th ed.)

Prewitt, Kenneth, i Sidney Verba. An Introduction to American Government. 3rd ed. New York: Harper & Row, 1979.

Cita MLA (9th ed.)

Prewitt, Kenneth, i Sidney Verba. An Introduction to American Government. 3rd ed. Harper & Row, 1979.