APA aipamena

Graham, R. A. (1968). The Pope and Poland in World War Two. London.

Chicago Style aipamena

Graham, Robert A. The Pope and Poland in World War Two. London, 1968.

MLA aipamena

Graham, Robert A. The Pope and Poland in World War Two. London, 1968.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.