Columbia subject headings:
Catholic Church--Doctrines.
Spirituality--Catholic Church.
Harvard subject headings:
Catholic Church--Doctrines.
Spirituality--Catholic Church
Spirituality--Christianity--History--Middle Ages, 600-1500
Princeton subject headings:
Catholic Church--Doctrines.
Spirituality--Catholic Church.
Spirituality--History of doctrines--Middle Ages, 600-1500.