Columbia subject headings:
Apocryphal books (New Testament)--Criticism, interpretation, etc.
Bible. Gospels--Criticism, interpretation, etc.
Bible. Gospels--Introductions.
Harvard subject headings:
Apocryphal books (New Testament)--Criticism, interpretation, etc.
Bible. Gospels--Criticism, interpretation, etc.
Bible. Gospels--Introductions.
Princeton subject headings: