Everett Ferguson Encyclopedia

-----

Hubert Drobner

Survey of Literature

-----

Cambridge History

Young/Ayers/Louth/Cassiday

-----

Philip Esler Ed.

Survey of Early Christianity

-----

Cambridge History

Origins to Constantine

-----

Cambridge History

Constantine to c. 600

-----

J.N.D. Kelly

Early Christian Doctrines

-----

J.N.D. Kelly

Early Christian Creeds

-----

Frances Young

-----

Mark Humphries

Early Christianity

-----