APA (7th ed.) Citation

Juan XXIII. (1961). Mater et magistra: Christianity and social progress. The America.

Chicago Style (17th ed.) Citation

Juan XXIII. Mater Et Magistra: Christianity and Social Progress. Nueva York: The America, 1961.

MLA (9th ed.) Citation

Juan XXIII. Mater Et Magistra: Christianity and Social Progress. The America, 1961.

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