APA aipamena

Newcomb, S. (1966). Principles of political economy. New York: Harper & Brothers.

Chicago Style aipamena

Newcomb, Simon. Principles of Political Economy. New York: Harper & Brothers, 1966.

MLA aipamena

Newcomb, Simon. Principles of Political Economy. New York: Harper & Brothers, 1966.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.