Schmidt, T. V. (1981). A guide to the encyclicals of the Roman pontiffs from Pius XII to Paul VI (1939-1978). Catholic University of America.
Citace podle Chicago (17th ed.)Schmidt, Thomas V. A Guide to the Encyclicals of the Roman Pontiffs from Pius XII to Paul VI (1939-1978). Washington, D.C.: Catholic University of America, 1981.
Citace podle MLA (8th ed.)Schmidt, Thomas V. A Guide to the Encyclicals of the Roman Pontiffs from Pius XII to Paul VI (1939-1978). Catholic University of America, 1981.
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