5 books • 2 series
Gregory of Nazianzus's Letter Collection (Christianity in Late Antiquity, #7)
The Five Theological Orations of Gregory of Nazianzus (Classic Reprint)
S. Patris Nostri Gregorii Nazianzeni, Omnia Quae Extant Opera, Volume 1...
The Five Theological Orations
On God and Christ (St. Vladimir's Seminary Press "popular patristics")