APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.