Columbia subject headings:
Byzantine drama--History and criticism.
Christos paschōn--Authorship.
Gregory, of Nazianzus, Saint--Authorship.
Harvard subject headings:
Byzantine drama--History and criticism.
Gregory, of Nazianzus, Saint--Authorship.
Gregory, of Nazianzus, Saint. Christos paschōn--Authorship.
Princeton subject headings:
Authors, Greek--Byzantine Empire.
Christos paschōn--Authorship.
Gregory, of Nazianzus, Saint--Authorship.