APA aipamena

Berle, A. A. (1957). Tides of crisis: A primer of foreign relations. New York: Reynal and Company.

Chicago Style aipamena

Berle, Adolf A. Tides of Crisis: A Primer of Foreign Relations. New York: Reynal and Company, 1957.

MLA aipamena

Berle, Adolf A. Tides of Crisis: A Primer of Foreign Relations. New York: Reynal and Company, 1957.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.