APA aipamena

Aston , T. (1966). Crisis in Europe. Routledge.

Chicago Style aipamena

Aston , Trevor. Crisis in Europe. London: Routledge, 1966.

MLA aipamena

Aston , Trevor. Crisis in Europe. Routledge, 1966.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.