Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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