APA aipamena

Roberts, P. (1920). The problem of Americanization. Macmillan.

Chicago Style aipamena

Roberts, Peter. The Problem of Americanization. New York: Macmillan, 1920.

MLA aipamena

Roberts, Peter. The Problem of Americanization. Macmillan, 1920.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.