Leo XIII, P. (1944). Humanum Genus: Encyclical Letter of Our Holy Father...Pope Leo XIII on freemasonry with discussion club outline, by Gerald C. Treacy. New York.
Chicago-referens (17:e uppl.)Leo XIII, Pope. Humanum Genus: Encyclical Letter of Our Holy Father...Pope Leo XIII on Freemasonry with Discussion Club Outline, by Gerald C. Treacy. New York, 1944.
MLA-referens (8:e uppl.)Leo XIII, Pope. Humanum Genus: Encyclical Letter of Our Holy Father...Pope Leo XIII on Freemasonry with Discussion Club Outline, by Gerald C. Treacy. New York, 1944.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.