Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Penniman, Howard R. The American Political Process. Nueva York: D.Van Nostrand, 1962.

Cita MLA (8a ed.)

Penniman, Howard R. The American Political Process. D.Van Nostrand, 1962.