APA aipamena

Penniman, H. R. (1962). The american political process. New York: D. Van Nostrand Company, Inc.

Chicago Style aipamena

Penniman, Howard R. The American Political Process. New York: D. Van Nostrand Company, Inc, 1962.

MLA aipamena

Penniman, Howard R. The American Political Process. New York: D. Van Nostrand Company, Inc, 1962.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.