Παραπομπή σε μορφή APA (7η εκδ.)

Pius XII, P. (1951). To all who are in prison: A message. National Catholic Welfare Conference.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Pius XII, Pope. To All Who Are in Prison: A Message. Washington, D.C.: National Catholic Welfare Conference, 1951.

Παραπομπή σε μορφή MLA (8th εκδ.)

Pius XII, Pope. To All Who Are in Prison: A Message. National Catholic Welfare Conference, 1951.