APA aipamena

Freidel, F., & Pollack, N. (1966). American Issues in theTwentieth Century. Sceintific Book Company.

Chicago Style aipamena

Freidel, Frand, and Norman Pollack. American Issues in TheTwentieth Century. Calcutta: Sceintific Book Company, 1966.

MLA aipamena

Freidel, Frand, and Norman Pollack. American Issues in TheTwentieth Century. Sceintific Book Company, 1966.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.