- An article from the Catholic Encyclopedia ...www.newadvent.org/cathen/07222a.htm
- An article from the Catholic Encyclopedia ...www.newadvent.org/cathen/07158b.htm
- An article from the Catholic Encyclopedia ...www.newadvent.org/cathen/07158a.htm
- An article from the Catholic Encyclopedia ...www.newadvent.org/cathen/07220b.htm