Patristics/Early Church History

The Wiley Blackwell Companion to Patristics by Ken Parry (Editor)

Patrology by Berthold Altaner ; translated by Hilda C. Graef.

Geschichte der altkirchlichen Literatur by Bardenhewer, Otto. 

Lexicon der antiken christlichen Literature by Dopp, Siegmar and Wilehlm Goerlings, eds.

The Fathers of the Church by Hubertus R. Drobner; Siegfried S. Schatzmann (Translator); William Harmless (Contribution by)

Early Christian Greek and Latin literature : a literary history by Moreschini, Claudio and Enrico Norelli.

Patrology by Quasten, Johannes.

Patrologia by Quasten, Johannes and Angelo di Berardino. 

The Cambridge History of Early Christian Literature by Frances Young (Editor); Lewis Ayres (Editor); Andrew Louth (Editor); Augustine Casiday (Assisted by)