*[http://en.wikipedia.org/wiki/Tertullian Wikipedia: Tertullian]*[http://www.newadvent.org/cathen/14520c.htm Catholic Encyclopedia: Tertullian]*[http://www.ntcanon.org/Tertullian.shtml Tertullian on NT Canons]*[http://phoenicia.org/tertullian2.html Tertullian of Carthage]*[http://www.tparents.org/Library/Religion/Christian/NT-Canon/tertullian.htm Tertullian of Carthage]