Cita APA (7th ed.)

Penniman, H. (1962). The american political process. D. van Nostrand.

Cita Chicago (17th ed.)

Penniman, Howard. The American Political Process. Princeton: D. van Nostrand, 1962.

Cita MLA (9th ed.)

Penniman, Howard. The American Political Process. D. van Nostrand, 1962.