Catholic Church. Pope (1878-1903 : Leo XIII). (1978). Humanum genus: Encyclical letter of His Holiness Pope Leo XIII on Freemasonry, April 20, 1884. Tan Books and Publishers, Inc..
Chicago-viite (17. p.)Catholic Church. Pope (1878-1903 : Leo XIII). Humanum Genus: Encyclical Letter of His Holiness Pope Leo XIII on Freemasonry, April 20, 1884. Rockford, Illinois: Tan Books and Publishers, Inc., 1978.
MLA-viite (8. p.)Catholic Church. Pope (1878-1903 : Leo XIII). Humanum Genus: Encyclical Letter of His Holiness Pope Leo XIII on Freemasonry, April 20, 1884. Tan Books and Publishers, Inc., 1978.
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