Frederick Crombie

• De Principiis
• Critical and Exegetical Hand-Book to the Gospel of John
• The Writings of the Apostolic Fathers
• Against Celsus
• Against Celsus: Books I-III : (Contra Celsus)
• Di Principiis
• Essential Writings of Origen
• Letter from Origen to Africanus
• Origen Against Celsus
• Pastor of Hermas