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Lua i Stíl Chicago (17ú heag.)Catholic Church. Pope (1922-1939 : Pius XI), National Catholic Welfare Conference, agus Pope Pius XI. The Church and Mexico: On the New Persecutions of the Church by the Mexican Government : Encyclical Letter of His Holines, Pope Pius XI. Washington, D.C.: National Catholic Welfare Conference, 1932.
Lua MLA (8ú heag.)Catholic Church. Pope (1922-1939 : Pius XI), et al. The Church and Mexico: On the New Persecutions of the Church by the Mexican Government : Encyclical Letter of His Holines, Pope Pius XI. National Catholic Welfare Conference, 1932.