Fifth Lateran Council
- Article from the Catholic Encyclopedia.
- http://www.newadvent.org/cathen/09018b.htm

Fourth Lateran Council
- Article from the Catholic Encyclopedia.
- http://www.newadvent.org/cathen/09018a.htm

Third Lateran Council
- Article from the Catholic Encyclopedia.
- http://www.newadvent.org/cathen/09017b.htm

Second Lateran Council
- Article from the Catholic Encyclopedia.
- http://www.newadvent.org/cathen/09017a.htm

First Lateran Council
- Article from the Catholic Encyclopedia.
- http://www.newadvent.org/cathen/09016b.htm

Lateran Councils
- Article from the Catholic Encyclopedia.
- http://www.newadvent.org/cathen/09016a.htm

Lateran IV
- The Twelfth Ecumenical Council held in 1215. From the Medieval Sourcebook.
- http://www.fordham.edu/halsall/basis/lateran4.html

Lateran III: On Papal Elections, 1179
- From the Medieval Sourcebook.
- http://www.fordham.edu/halsall/source/lat3-elect.html

Fourth Lateran Council, 1215 : Canon on Heresy
- From the Medieval Sourcebook.
- http://www.fordham.edu/halsall/source/lat4-c3.html