Summi Pontificatus (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Summi Pontificatus" in English language version.

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jstor.org

Frank J. Coppa. "The Hidden Encyclical of Pius XI against Racism and Anti-Semitism Uncovered-Once Again! A Bibliographical Essay" The Catholic Historical Review Vol 84, No. 1 (Jan 1998)

nytimes.com

timesmachine.nytimes.com

"Dictators, Treaty-Breaking and Racism are Condemned by the Pope in his First Encyclical" (PDF). The New York Times. October 28, 1938. Retrieved February 11, 2014.