Catholic Church. Pope (1878-1903 : Leo XIII), Treacy, G. C., & Leo XIII, P. (1944). Freemasonry. Paulist Press.
Chicago-viite (17. p.)Catholic Church. Pope (1878-1903 : Leo XIII), Gerald C. Treacy, ja Pope Leo XIII. Freemasonry. New York: Paulist Press, 1944.
MLA-viite (8. p.)Catholic Church. Pope (1878-1903 : Leo XIII), et al. Freemasonry. Paulist Press, 1944.
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