Cita APA (7th ed.)

Pennock, J. R., & Smith, D. G. (1964). Political science: An introduction. Macmillan.

Cita Chicago (17th ed.)

Pennock, James Roland, i David G. Smith. Political Science: An Introduction. New York: Macmillan, 1964.

Cita MLA (9th ed.)

Pennock, James Roland, i David G. Smith. Political Science: An Introduction. Macmillan, 1964.