APA aipamena

John XXIII, P. (1960). Christmas message 1959. National Catholic Welfare Conference.

Chicago Style aipamena

John XXIII, Pope. Christmas Message 1959. Washington, D.C.: National Catholic Welfare Conference, 1960.

MLA aipamena

John XXIII, Pope. Christmas Message 1959. National Catholic Welfare Conference, 1960.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.