Tertullian On Fasting
- Survey on individual, communal, and stational fasts in Tertullian's Carthaginian community.
- http://people.vanderbilt.edu/~james.p.burns/chroma/practices/fastmcgowan.htm

Early Church.org.uk: Tertullian of Carthage
- Overview of Tertullian's contributions, methods of exegesis, rhetoric, anti-intellectualism, and Montanism. Includes sources.
- http://www.earlychurch.org.uk/tertullian.php

The Development of the Canon of the New Testament: Tertullian of Carthage
- Tertullian's citations of New Testament writings and other related works.
- http://www.ntcanon.org/Tertullian.shtml

Tertullianus, Quintus Septimius Florens
- Extensive entry on Tertullian encompasses his life and theological notions, and includes outlines of his tracts. From the Early Christian Writings.
- http://www.earlychristianwritings.com/info/tertullian-wace.html

The Ecole Glossary: Tertullian
- Brief biography, by Elise M. Bender.
- http://www2.evansville.edu/ecoleweb/glossary/tertullian.html

Catholic Encyclopedia: Tertullian
- Long article on this ecclesiastical writer.
- http://www.newadvent.org/cathen/14520c.htm

The Tertullian Project
- Information about this second-century church father, his works, lost works, manuscripts.
- http://www.tertullian.org/