Cita APA (7a ed.)

Pius XII, P., & Schaefer, M. C. (1944). Pius XII and peace, 1939-1944: Excerpts from selected messages. National Catholic Welfare Conference.

Cita Chicago Style (17a ed.)

Pius XII, Pope, y Mary Catherine Schaefer. Pius XII and Peace, 1939-1944: Excerpts from Selected Messages. Washington, D.C.: National Catholic Welfare Conference, 1944.

Cita MLA (8a ed.)

Pius XII, Pope, y Mary Catherine Schaefer. Pius XII and Peace, 1939-1944: Excerpts from Selected Messages. National Catholic Welfare Conference, 1944.