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Smith, S. Pope Clement XIII. The Catholic Encyclopedia. New York: Robert Appleton Company. 1908 [2018-01-27]. (原始内容存档于2018-01-27) –通过New Advent (英语).
O'Riordan, M. Apostolicum Pascendi Minis. The Catholic Encyclopedia. New York: Robert Appleton Company. 1907 [2018-02-08]. (原始内容存档于2018-02-08) –通过New Advent (英语).