- An article from the Catholic Encyclopedia ...www.newadvent.org/cathen/14628a.htm
- An article from the Catholic Encyclopedia ...www.newadvent.org/cathen/14463d.htm
- An article from the Catholic Encyclopedia ...www.newadvent.org/cathen/14742a.htm
- An article from the Catholic Encyclopedia ...www.newadvent.org/cathen/14507b.htm
- An article from the Catholic Encyclopedia ...www.newadvent.org/cathen/14704a.htm