Cita APA (7th ed.)

Austin, E. W., & Clubb, J. M. (1986). Political facts of the United States since 1789. Columbia University Press.

Cita Chicago (17th ed.)

Austin, Erik W., i Jerome M. Clubb. Political Facts of the United States Since 1789. New York: Columbia University Press, 1986.

Cita MLA (9th ed.)

Austin, Erik W., i Jerome M. Clubb. Political Facts of the United States Since 1789. Columbia University Press, 1986.